It's been four weeks since the Fortress collapsed and Clark disappeared. Green Arrow calls upon Black Canary and Aquaman to locate the missing Clark Kent. Clark, in the meantime, is powerless and residing in a Russian prison camp in Siberia. With Lex Luthor missing and presumed dead, a new ruthless CEO, named Tess Mercer, is appointed the head of LuthorCorp and moves into Lex's mansion with her own dark plans for Clark and Metropolis. Chloe is kidnapped by a clandestine group that has discovered her special powers and they want to test the limits of those new powers by locating Green Arrow and his friends.

Clark's first day on the job at the Daily Planet begins with a bus exploding right outside the building, which leads him and Lois on a trail of someone who might be infected by kryptonite. Chloe finds a runaway teenage girl, named Bette, whom Chloe suspects is involved in the explosion when Bette (whom will later become the fire-starter Plastique) has the meteor-rock power of pyrokinesis. In the meantime, Chloe also meets a local medic, named Davis Bloom, who takes an interest in her, even though she's engaged to Jimmy Olsen. Elsewhere, Tess meets Clark for the first time as she takes over the Daily Planet in Lex's absence and immediately senses something not right about him.

Oliver Queen is poisoned at a charity fundraiser and Clark races around the world to find a cure.

When Tess inadvertently activates the mysterious Kryptonian Knowledge crystal found in the Artic, it emits a high-band beacon which summons an alien queen, named Maxima, who arrives on Earth and begins a search for her new mate, with a kiss that is too strong for humans to survive. Meanwhile, after just moving in together, Jimmy finds a letter that Chloe wrote for Clark that revives Jimmy's insecurities.

After Jimmy and Chloe disappear from sight for a bit and it turns out it has been against their will, Lois and Clark pose as a couple to flush out the kidnapper.

A serial killer is on the loose in Metropolis, and Clark always seems to be one step behind him, while Chloe's paramedic friend seems to think he blacks out and performs the dirty deeds, himself.

Jimmy takes a photo of Clark using his super-speed while saving Lois from danger, but it comes out blurred. Tess decides the story should make the front page for the Daily Planet exposing the mysterious new 'superhero' that. Chloe refuses to continue helping Clark protect his secret, so Clark turns to Oliver for help when Jimmy gets too close to discovering his secret. Meanwhile, Lois meets Sebastian Kane, a new reporter at the Daily Planet, who has the power to see peoples' memories by merely touching. He has been hired by Tess to find the missing alien crystal.

Clark receives a crystal that sends him and a visiting Lois to the Phantom Zone where they run into Kara. Kara tries to open a portal for Lois before it's too late but Zod's wife, Faora, manages to escape in Lois's body and proceeds to go on a rampage through the streets of Metropolis.

When Chloe begins having memory loss when the essence of Brainiac begins replacing her memories with Kryptonian codes, Clark decides to use the Crystal of Knowledge to reconstruct the Fortress of Solitude and ask the spirit of Jor-El for help. Meanwhile, Jimmy begins to worry about Chloe's well-being, while Davis, disturbed by the knowledge that he may have alien origins, begins to become drawn to Chloe.

Oliver gets a step closer to finding Lex, but Clark refuses to help for the time being, due to Chloe's special day, while Lois finds she has special feelings for Clark, who has a surprise (or two) waiting for him at the wedding reception.

The aftermath of Doomsday's attack on Chloe and Jimmy's wedding leaves Clark in shock, but before he can search for the kidnapped Chloe, an evil being, known as The Persuader, appears and attacks him. Rokk, Imra and Garth, also known as The Legion, step in from the future to help vanquish the Persuader and the group realizes Brainiac has taken over Chloe once again. Meanwhile, up at the Fortress, Chloe, as Brainiac, informs Davis he is Doomsday and was created to kill "the other Kryptonian" and destroy the world.

Clark discovers John Jones was shot while working as a police officer, so Clark dons the uniform and goes undercover to find the culprit. Meanwhile, Lana confronts Tess and tells her Lex isn't the man she thinks he is. Lana's shocking news forces Tess to reevaluate her position as the head of Luthorcorp.

Clark and Chloe search for Lana, who has it in her head that things will be better between her and Clark if they were on "a more-even keel," and goes off on her own in search of a suit developed by Luthor, Corp. that will make her invincible.

There is an explosion at Luthorcorp when Oliver is about to announce he controls the interests of Luthorcorp. Oliver suspects Lex is behind the explosion but he realizes the bomb was made by an ex Queen Industries' employee called Winslow Schott. Lana learns her power suit gives her the power to absorb Kryptonite.

Linda Lake comes back to Smallville and blackmails Clark to expose his true identity. However, Clark decides he will reveal his secret by himself. A fanatic teenager fakes a fall so Clark can save her.

Tess devises a plan which will reveal Clark's true identity, while Davis comes up with a plan to ease the demon within him, but finds himself trying to scramble after Jimmy sees him kill someone.

Reflecting on her status in life, Chloe finds that she's not all what she dreamed of becoming, so when a magician asks her to make a wish, little did she dream of it coming true...becoming Lois.

All signs point to the fact that Clark was not the only one that landed on Earth the day of the meteor shower in Smallville.

Chloe and Lois are attacked by two thugs which one of them is hit by Lois with her heel, she starts feeling a bit heroine about it so she recruits Jimmy for the picture so she can convince the people she is Metropolis' new hero, with the name of 'Stiletto', so she can take away the famous red and blue blur. However, Lois may end having contact with this red and blue blur when Clark wants to try to track down the mysterious 'Stiletto'. While Clark tries to help Chloe recover her stolen laptop computer with all of the Justice League's files on it, she continues to hide Davis in the basement of The Talon. Elsewhere, Jimmy is working as a bartender at a nightclub where the thugs who robbed Chloe and Lois reside and are plotting to kill Stiletto to reclaim the city for themselves.

Davis asks Chloe if she can go away from the city with him, but when Clark realizes Davis is alive, he confronts Chloe to give him an explanation about it. Meanwhile, Oliver discovers that Jimmy has become a pill-popping junkie and offers his services and emotional support. But Jimmy is too consumed by his anger and paranoia and brushes off Oliver. Later, when Oliver sees Jimmy breaking into Chloe's apartment to steal money and items to buy more drugs, things get worse when Davis appears and attacks them both. It leads to an angry Clark tracking down Davis/Doomsday to the ruins of the Fortress of Solitude for a brutal confrontation.

Chloe mysteriously returns to Smallville where she gives Clark the idea of killing Davis by telling him he can't keep the beast under control. Unknown to Clark, Tess has gotten together a kill-team affected by meteor rocks to track down Davis so Clark can kill him, but things get out of control when Tess' team discovers that she betrayed them. Meanwhile, Oliver, as the Green Arrow, agrees to help Clark look for things that can stop Davis by breaking into Tess' safe at the mansion to steal some black Kryptonite hoping to separate the two entities apart, while Chloe is revealed not who she appears to be, and Tess is working for another greater power beyond everyone else.

Clark tells Oliver that he must kill Davis, but Clark deals with the fact that he can't take a human life. This leaves the justice league to take the affair on their own hands. Then, Rokk Krinn teleports from the 31st Century to give Clark another Legion time-traveling ring so Clark can exile Davis/Doomsday to the future. But in a surprising twist, Lois confronts Tess about her nefarious plans involving a mysterious crystal and in the fight, Lois accidentally finds Rokk's ring, and gets zapped into the future. Meanwhile, Chloe gets in the middle of Clark and Oliver's fight about Doomsday's human carnage, in which Dianah/Black Cannary and Bart/Impulse intervene. Jimmy finds out Clark's identity, leading to a fateful showdown when Clark attempts to use black kryptonite to split Davis from Doomsday and seal the beast in a large hole in the ground. But nobody is prepared for what Davis will do afterwords.

Clark decides that he is ready to start his training at the Fortress of Solitude to become 'Superman'. However, the spirit of Jor-El insists that he return to Metropolis to cut his ties with the people he knows before he begins. Lois reappears in the city with no recollection of vanishing to the future. Her investigation into a monorail crash brings her into contact with a new reporter named John Corben. John is opposed to the "Red and Blue Blur", and has a secret power and identity himself. Meanwhile, Chloe's friendship with Clark deteriorates when he refuses to use the Legion ring to go back in time to save Jimmy. Elsewhere, Oliver turns down a dark path in his quest to rid the world of evil. General Zod makes his entrance at the Luthor mansion before Tess.

After being hit by a truck, John Corben becomes a human guinea pig when his heart is replaced by a machine powered by meteor rocks, which, in turn, gives him extraordinary strength, and he realizes he can use it to catch his prey...the Red & Blue Blur.

Clark, unknowingly, exposes himself to Zod when a virus is released on Metropolis that turns its residents into zombies.

After an accident, Clark (Tom Welling) is able to read Lois' mind, then he asks her out. Meanwhile, a washed up Oliver finds himself in danger.

A mysterious woman forces Oliver to play in a dangerous game of Russian Roulette and then turns up dead. The police believe Oliver is responsible and arrest him, while Clark reluctantly sets out to prove Oliver's innocence. Meanwhile, Lois angrily confronts Clark over his knowledge about Oliver's suicide attempt.

Oliver tries to help a young street girl, Mia AKA Speedy, get out of her dangerous life by offering to train her, but Mia double crosses him. Lois asks Clark to help her land a job as an on-air television host, but the two are shocked when the station wants to hire them as a team.

Jor-El mysteriously arrives at the Kent farm to hide the Book of Rao, but meets Chloe instead. She tells him that his son, Kal-El is on Earth and lives at the farm. Convinced the Blur is Jor-El, Zod enlists Tess's help in finding him to force him to reveal the secret to his powers. Clark realizes Jor-El is alive and on Earth and races to find him before Zod does.

Superhero twins Zan and Jayna (aka: the Wonder Twins) show up in Metropolis to help 'The Blur' fight crime with their combined shape-changing abilities. But the clumsy and naive teenagers end up botching several rescues, landing Clark in hot water with the District Attorney's office. Clark decides to come forward as The Blur to clear his name despite Chloe's protests. Meanwhile, Lois begins seeing a therapist to deal with her growing romantic feelings for Clark, and gets dangerously close to discovering his secret identity.

Tess kidnaps Lois to find out where Lois went after she disappeared for weeks. Lois's memory of the future depicts a Metropolis under Zod's rule and Clark powerless under the red sun, while Chloe forms a resistance group with Oliver. After learning of these future events, Clark makes an important decision about Zod.

Someone with Oliver's skills as an archer take aim at Lois and Chloe.

A man named Sylvester Pemberton tracks down Chloe and tells her he knows about her team of superheroes and needs their help. However, before he can explain who he is, he is attacked and killed by Icicle. Clark and Chloe's investigation leads Clark to the former headquarters of the Justice Society of America, an underground team of superheros, where he meets up with Nelson (AKA: Dr. Fate), Carter Hall (AKA: Hawkman) and Courtney (AKA: Star Girl). Courtney pleads with Hawkman and Dr. Fate to help her catch the killer that is targeting their group but they are reluctant to resume their duties as superheroes. Clark, John Jones, Green Arrow and Chloe team up to help the JSA stop Icicle before he murders another member of the group. Meanwhile, Lois receives a package from a mysterious agency called Checkmate, run by the shadowy Amanda Waller.

Clark meets the sorceress Zatanna (from episode 'Hex') at a comic book convention, where she tells him that her father charmed a copy of the comic book "Warrior Angel" and it holds magical powers. A young boy, named Alec, steals the comic book and develops super powers, transforming himself into Warrior Angel and saving Chloe from a horrible accident who doesn't know about Alec's true origins. Meanwhile, Lois becomes jealous of Clark's relationship with Zatanna.

It is Valentine's Day and while Clark is out on a date with Lois, he unknowingly becomes infected by gemstone kryptonite, which has magical wish-fulfilling properties. Clark mentions to Lois that he wishes they had a more traditional relationship, so Lois quits the Daily Planet, moves in with Clark and starts planning their wedding. Still unaware of his new power, Clark also casually tells Chloe he wishes she would spend more time watching out for him, so an infected Chloe takes his wish to heart and sets her sights on a new target: Lois. Meanwhile, Zod quarrels with Tess as well as his wife, Faora, over the construction of the new solar tower which he hopes will restore his and the Kandorians super powers which will enable them to take over the Earth.

Clark teams up with Zod's wife, Faora, to investigate the abduction of her sister, Vala, and several Kandorians whom have been experimenting with humans in order to find a way to claim their super powers, while Lois herself is abducted by Bernard Chisholm, a former doctor the Kandorians experimented on, claiming that there are aliens on Earth and he wants the skeptic Lois to write an article about it. But when Zod goes off on his own and tries to stop Chisholm, without his super powers, Clark is conflicted whether to save the life of his enemy. Meanwhile, Oliver investigates the disappearance of money from Tess' company accounts and he discovers that Chloe is responsible and using the embezzled money to construction Kryptonite weapons for possible use against Zod and the Kandorians.

Clark and Lois head out of town for a quiet romantic getaway, but their plans are thwarted when they run into Chloe and Oliver at their Bed & Breakfast Inn. The couples' awkward moment is interrupted by the arrival of the Silver Banshee, who sets her sights on Clark and Oliver. Meanwhile, Tess faces off with Zod with a surprising result.

Tess creates an elaborate hoax in order to kidnap Oliver/Green Arrow, and delivers him to the shady head of the secret society Checkmate, Amanda Waller, who tells him that that the government is recruiting him to serve his country. However, Green Arrow escapes before they can learn his identity. After Oliver brings Clark and Chloe up to speed on what happened to him, the three investigate and Clark is surprised to find John Jones investigating Oliver's kidnapping too. Clark senses that John is keeping information from him. Oliver and Clark are shocked when Tess reveals that Amanda is after something called "Watchtower," which is Chloe's code name in the Justice League. When Chloe is captured by Checkmate agents, Waller threatens to kill Chloe unless Clark gives her the names and locations of the rest of the Justice League.

Zod continues to pose as "The Blur" and asks Lois to investigate one of Tess' secret labs. An explosion rocks the lab, and Lois is rescued by John Corben who was a subject of multiple experiments. While investigating the explosion, Clark is exposed to red kryptonite. And infected Clark takes Zod to the Fortress. Tess turns to Chloe for help and they send in Corben to stop Clark from revealing all his secrets.

The new editor tells Clark and Lois only one of them 'imps' may keep his/her job. they still collaborate, hoping a super-scoop should change his mind. An apparent opportunity is when Raymond Sacks, fires as D.A. for ordering a failed attempt at Lois's life, is spared prosecution and throws a nightclub celebration. Clark is warned by Chloe the blur's secret is compromised by impostor Zod's contact with Lois. He discovers Maxwell Lord, a wealthy tycoon and Checkmate king-level rogue, enlists Sacks for a plan to identify the Blur, whom a delivery-boy photographed, so he's captured like several people known to have seen him.

Tess's latest intrusion, at Watchtower, and Chloe's excessive lockout mechanism, lock the pair up, likely to be killed while Checkmate breaks trough the last firewalls. Intrudening the Luthor mansion Oliver faces Zod, whose abusive side reemerges, now with superpowers. Clark must save his friends and hopes to do he same for the Kandorians, one of which carries unsuspecting Zod's unborn child, but the all-round secrecy exacts terrible prices.

Clark is desperate to find the Book of Rao before Zod can find it. If it falls into Zod's hands, he will take over Earth. He's asking Chloe for her help. She is hampered by Tess's ravaging of her Watchtower equipment. Lois tells Clark she has a sure-fire way of getting their jobs back, but he is too preoccupied to listen. Her feelings are hurt. She says she needs a mission in life. In the midst of all this, Clark's mom returns unexpectedly with Perry White, whom she has been dating. Lois is smitten with Perry and shows him her hot lead - a photo of the Red/Blue Blur and tales of an alien race that is looking for the Book of Rao. She holds up a picture of it. Perry's jaw drops. He reaches into his briefcase and pulls out a copy of the same symbol. He tells her that they have a shared story. He is investigating an explosion of a secret government complex in the Rocky Mountains but has been blocked by someone with the code name, Red Queen. Meanwhile, Maxwell Lord has imprisoned Tess, demanding that she hand over the Book of Rao. As Chloe tries to help Clark search for the book, the Red Queen locks her computers. At an uncomfortable "family" dinner, Lois informs Clark that she's breaking up with him. Tess awakes from the mind manipulation that Lord has been using on her to get the Book of Rao. She grabs his gun and escapes. She heads home to get Rao from her wine cellar hiding place. But the real Red Queen - Martha Kent - holds her at gunpoint, knowing she would go for Rao when she fled Lord. Tess is forced to hand it over. Perry and Lois's story collapses, but his good word to the Planet editor gets Lois and Clark their desks back. At the Kent farm, Clark tells his mom that he knows now she is the Red Queen. She answers back that she has never stopped trying to protect him. If he uses the knowledge in the Book of Rao to exile all Kryptonians to another plane, it will exile all Kryptonians from Earth, including himself. She hands the Book of Rao to him.

Zod unleashes his army upon the world, forcing Chloe to call in reinforcements from old friends. Zod tells Lois he is The Blur and asks her to steal the Book of Rao from Clark. Torn between Clark and The Blur, Lois asks Clark to come clean with her about everything but he refuses. Chloe and Oliver attempt to reconnect Watchtower's satellite system in order to fight the Kandorians but to Chloe's horror, Oliver gets caught on site and disappears. Tess attempts to stop Zod but he leaves her clinging to life. Clark and Zod battle for control of Earth.

Oliver is tortured incessantly by Rick Flag until Chloe, who used the Dr. Fate's helmet to find him, exchanges herself for him. Awakening in a secret LuthorCorp lab among partial Lex clones, Tess meets young Alexander before the bloodthirsty, dying senior knocks her down and uses Lois, who enabled Clark's healing by removing the fatal blue kryptonite, to set a sadistic trap. Despite his success, Clark lets his confidence be undermined by Jor-El in the ice fortress, but reconsiders after a pep-talk from Jonathan.

Oliver tracks down his tormentor Rick Flag, learns he exchanged him for Chloe, who died poisoned, and informs Clark, who helps him work out Chloe actually staged her fake death. On her Daily Planet assignment in Egypt, Lois meets archaeologist Carter Hall ans soon suspects his story about a reincarnated Pharaonic prince is autobiographic. Clark dislikes her staff replacement Cat Grant, but saves her from never identified, yet infallible assassin Deadshot and learns he was the actual target, actually hired by Flag, knowing Superman's weakness is his noble need to protect.

Radio personality Gordon Godfrey becomes possessed by the dark force that Clark was warned about. Godfrey begins waging a crusade against all super-heroes as part of a promotional tour for his anti-vigilante book. Clark is standing on the fringe of a rally when Lois returns to give him a big hug. As they talk, a billboard falls toward the crowd. Clark rushes to catch it before it crushes the crowd. He is not needed. A very visible Kara (dressed in her Supergirl outfit) catches it. She has come back to Earth to tells Clark that Jor-El has sent her to take care of the evil that is coming. Jor-El is sure that the doubt in Clark's heart will allow the dark force to possess him and use Clark's powers as the ultimate weapon. Clark is reluctant to give up on what he views as his own mission. In an attempt to push himself further along, he asks Kara to give him flying lessons. He tries to launch himself from the top of the windmill. It works momentarily, until he then plummets to the ground through the barn roof. Lois learns that Godfrey is planning to reveal Green Arrow's identity online when he posts the final chapter of his book. This will create doubt all over the world about the super-heroes so that he can manipulate them down a new path. Clark and Kara confront Godfrey at a seedy nightclub. Kara's Kryptonian bracelet exorcises the entity from Godfrey. Lois rushes to tell Oliver about the big reveal that is scheduled. It is unnecessary. Oliver has Oliver decided it is best everyone knows the truth. He has scheduled a press conference and announces his identity as Green Arrow.

Still gravely pondering his place in life, Clark lets Lois drag him along to their Smallvillle high school reunion. Rather than enjoying his hero status, while Lois shines less than she expected, Clark worries when he spots Brainiac, but it turns out he returned from the future with the Legions ring to show Clark how vital his contribution is to prevent a horrible future for him, Oliver, their friends and the world.

Oliver enjoys his new, public role since he outed himself as super-hero, yet misses Chloe desperately and feeling guilty. His example further inspires Clark to tell at least Lois, but just when they meet to that end an Egyptian jewel allows the Pharaonic goddess Isis to take possession of her body, eager to resuscitate her beloved Osiris, all required being at hand from a major exposition in Metropolis, but that would also revive his realm, hell, on earth. Tess, who is otherwise preoccupied with Lex's boy-clone Alexander, joins Oliver and Clark at Watchtower, where she proves herself able to fill in for Chloe IT-wise. Even with that invaluable research, Clark nearly perishes in his supernatural duel with Isis. Cat get caught in the fight and mistakenly believes Lois is the evil Blur.

Clark examines a rural hamlet where blue kryptonite in the water has no known negative effects. However when a bell rings, tho local deputy regretfully knocks out the nosy reporter 'at the wrong time and place'. Lois has a car crash nearby and is nursed by an Amish family. Yet when she wants to leave, she discovers their chilling true intention, as the extremely aberrant sect does with one female every year. In the Luthor mansion, Alexander insists to be called Lex and his aging condition requires 'regular' birthday parties. Mercer's plan to give him a cure if the original lex's research allows so is reconsidered as she realizes this clone may be too perfect.

Clark is far from impressed that Lois barely dares rebuke her kid sister's mean pranks on both of them, while squirming for each, even offensive, whim of Pa, full general Sam Lane, as their Thanksgiving guest. Clark firmly but politely hosts the Lanes, while reasoning against the general's support for a bill to make 'registration' compulsory for superheroes, an obvious trap given the congressional supporters' antecedents. While Oliver investigates them, Clark saves everybody from proponent Rick Flag's Machiavellian rocket attempt on the general's life. Only when Lois finally sides with Clark against Pa, he reveal his ulterior motive for exaggerated rudeness.

Clark accompanies Tess, who got childhood nightmares triggered by a mysteriously delivered music-box, to the orphanage where she was left behind by her parents. They find out the hard way 'Granny', who runs it, far from her philanthropic image, in fact ruthlessly rules a brain-washed power girls ring. The general finally sent Lois the video made by her late mother when dying from cancer. Dealing with painful and sweet memories, she ends up digging in Clark's Kryptonian parental antecedents in the fortress.

Oliver tests the Vigilante Registration Act by outing himself at a press conference, praised by the general in charge. As feared, he's tortured in a secret prison to turn on his superhero friends. Tess helps work out the design from Luthor plans for an underwater top-security facility, build in sixfold. Aquaman 'A.C.' Arthur Curry and his new wife Mera discover and penetrate the one Oliver is held in, but the general rather starts auto-destruct. Clark remains cautious and flashes to the rescue but has to deal with a specific counter-measure.

Tess acquires a Kryptonian box that once belonged to Lionel Luthor. When Clark accidentally activates the box, he's transported to a parallel universe where Lionel found Clark in the cornfields instead of the Kents. In this universe, Clark Luthor is a murderer and Lois is engaged to Oliver and both of them hate Clark. Clark must be careful not to tip off Lionel that he's not his son while trying to figure out how to get back to Earth where the monster Clark Luthor was transported in his place.

As the VRA threat intensifies, Clark takes initiative by closing down watchtower and declaring the League go officially underground, but will this be enough to stop Lt.Trotter and Slade Wilson aka Deathstroke from exposing them? Tensions rise in this mid-season finale.

Clark, Oliver, Lois and Dinah are back home after long VRA captivity, with confused memories and robbed of all superhero-powers. They believe they have been tortured in an experimental lab by none other than Chloe, hence fear she switched sides. Then she, or rather her avatar, appears in dreams to each of them, claiming they only lost their powers in a virtual illusion, which can nevertheless kill them for real. She calls upon them to trust her, break the virtual spell by believing it fake and thus escape back into reality, with Rick Flag's team. Oliver does so quickly, and is reunited with his true love. Clark wants to, but finds it extremely hard, until Lois joins in.

Clark is surprised to see Martha on the news speaking at a pro-vigilante rally. However, surprise quickly turns to horror when he and Lois watch as Martha is injured in an attack on national television. Meanwhile, Lionel reveals himself to the world and reclaims LuthorCorp from Tess and Oliver. Lois and Chloe decide to cheer Clark up by showing him videos from thousands of vigilante supporters professing their support for The Blur.

Chloe and Oliver are mistaken for FBI agents investigating Desaad's recent string of murders and the pair are kidnapped by Desaad's minions. Desaad tries to infect Chloe with the darkness. Meanwhile, Lois tells Clark he needs to be more careful with his identity and suggests a disguise.

After Zatanna sends a magically spiked bottle of champagne to Clark and Lois for their bachelor/bachlorette parties, the gang blacks out after the toast, only to wake up the next morning and realize they can't remember anything about the night before. While trying to retrace their steps, Lois realizes she lost her engagement ring and drags Oliver back to the Fortune Casino where she thinks she lost it. The two run into Fortune, the eccentric casino owner, who accuses them of stealing money from him. Meanwhile, Clark tells Chloe he has a memory of stealing an armored truck the night before.

Lionel and Tess go head to head in a battle for the Luthor name. Clark and Lois are stunned by Tess' latest present to them.

Clark Kent is in nostalgic mood after Martha signs over the deed to the farm as a wedding present, wondering whether it suggests he and Lois should sell and move. Clark Luthor surprises him, using the mirror box and shattering it after having sent Kent to his world, then fool everyone for a while, in search of bloody vengeance on at least one Luthor. Kent finds himself, public enemy number one against whom everyone caries green kryptonite, at Oliver's funeral, where a bitter Jonathan scolds the 'scrooge'. Recognized and helped by the other Lois, he seeks to appease hatred and find a way back. Dr. Emil Hamilton frantically tries to repair the mirror-box, just in time.

Clark gets an inverse make-over from Lois, in order to become a gray mouse when the Blur goes public. Just then, a flashy media-hungry new superhero emerges: Booster Gold, who systematically steals the show. Clark discovers Booster came from the future with a Legionnaire's ring, probably stolen. Generally bullied, shy schoolboy Jaime Reyes is inadvertently infected with the alien scarab which Booster was hired to retrieve for industrialist Ted Kord, hence transformed into the Blue Beetle, an uncontrollable monster. Clark could just expose Booster as a fake coward, but chooses to educate him in superhero ethics.

After the banished General Slade is found on earth, Clark realizes the Phantom Zone portal must be open and decides to go close it, however dangerous as his super powers don't work there. Oliver was denied coming along but managed by surprise. The heroes find the zone under the rule of General Zod, who looks forward to his revenge for both worlds on Clark and was promised full dominion by Darkseid if he eliminates the great Kryponian adversary. So Clark is forced to enter Zod's arena's mortal gladiator combat, while Oliver is offered an alternative and reminded of being Omega-branded already, which no earthling knows yet. In the Watch Tower, Lois discovers the three hours portal destruction 'safeguard' Clark ordered Tess to trigger and fights it.

Searching for the Bow of Orion, the only known means to stop the Darkness, Oliver and Kara independently reached the same booby-trapped underground sanctuary. Kara got herself trapped, but Oliver rescues her in Indiana Jones style. Together they decipher and follow the clues to the bow, only to be get a bitter surprise. Meanwhile instead of giving his blessing in the fortress, Jor-El temporarily transfers Clark's super-powers to his already far too cocky bride.

The story of Clark Kent culminates in this two-hour series finale as Clark takes the last step to becoming the Man of Steel.

Clark discovers John Jones was shot while working as a police officer, so Clark dons the uniform and goes undercover to find the culprit. Meanwhile, Lana confronts Tess and tells her Lex isn't the man she thinks he is. Lana's shocking news forces Tess to reevaluate her position as the head of Luthorcorp.

Clark accompanies Tess, who got childhood nightmares triggered by a mysteriously delivered music-box, to the orphanage where she was left behind by her parents. They find out the hard way 'Granny', who runs it, far from her philanthropic image, in fact ruthlessly rules a brain-washed power girls ring. The general finally sent Lois the video made by her late mother when dying from cancer. Dealing with painful and sweet memories, she ends up digging in Clark's Kryptonian parental antecedents in the fortress.

Tess acquires a Kryptonian box that once belonged to Lionel Luthor. When Clark accidentally activates the box, he's transported to a parallel universe where Lionel found Clark in the cornfields instead of the Kents. In this universe, Clark Luthor is a murderer and Lois is engaged to Oliver and both of them hate Clark. Clark must be careful not to tip off Lionel that he's not his son while trying to figure out how to get back to Earth where the monster Clark Luthor was transported in his place.

Clark and Chloe search for Lana, who has it in her head that things will be better between her and Clark if they were on "a more-even keel," and goes off on her own in search of a suit developed by Luthor, Corp. that will make her invincible.

All signs point to the fact that Clark was not the only one that landed on Earth the day of the meteor shower in Smallville.

Tess devises a plan which will reveal Clark's true identity, while Davis comes up with a plan to ease the demon within him, but finds himself trying to scramble after Jimmy sees him kill someone.

Lionel and Tess go head to head in a battle for the Luthor name. Clark and Lois are stunned by Tess' latest present to them.

Chloe mysteriously returns to Smallville where she gives Clark the idea of killing Davis by telling him he can't keep the beast under control. Unknown to Clark, Tess has gotten together a kill-team affected by meteor rocks to track down Davis so Clark can kill him, but things get out of control when Tess' team discovers that she betrayed them. Meanwhile, Oliver, as the Green Arrow, agrees to help Clark look for things that can stop Davis by breaking into Tess' safe at the mansion to steal some black Kryptonite hoping to separate the two entities apart, while Chloe is revealed not who she appears to be, and Tess is working for another greater power beyond everyone else.

Oliver enjoys his new, public role since he outed himself as super-hero, yet misses Chloe desperately and feeling guilty. His example further inspires Clark to tell at least Lois, but just when they meet to that end an Egyptian jewel allows the Pharaonic goddess Isis to take possession of her body, eager to resuscitate her beloved Osiris, all required being at hand from a major exposition in Metropolis, but that would also revive his realm, hell, on earth. Tess, who is otherwise preoccupied with Lex's boy-clone Alexander, joins Oliver and Clark at Watchtower, where she proves herself able to fill in for Chloe IT-wise. Even with that invaluable research, Clark nearly perishes in his supernatural duel with Isis. Cat get caught in the fight and mistakenly believes Lois is the evil Blur.

After Zatanna sends a magically spiked bottle of champagne to Clark and Lois for their bachelor/bachlorette parties, the gang blacks out after the toast, only to wake up the next morning and realize they can't remember anything about the night before. While trying to retrace their steps, Lois realizes she lost her engagement ring and drags Oliver back to the Fortune Casino where she thinks she lost it. The two run into Fortune, the eccentric casino owner, who accuses them of stealing money from him. Meanwhile, Clark tells Chloe he has a memory of stealing an armored truck the night before.