Spike, Caitlin, Joey, Lucy, and Snake have a high school reunion at Degrassi Community School. Joey's wife has died and he is unsure if he wants to go to the reunion, especially after meeting Caitlin's fiancé. Meanwhile, as Emma (Spike's daughter) is preparing to enter grade 7, she meets a boy online named Jordan.

While the high school reunion is underway at Degrassi, Emma meets her online friend, Jordan, in person, and no one's evening goes as planned.

Toby and Ashley have just become step-siblings and their families moved in together, but they do not get along. Ashley is running for school president, and Toby convinces his best friend, J.T., to run against her. Emma and Manny are having problems of their own. Being in grade 7 is tough, especially when Spinner is on a power trip.

Terri is not looking forward to the school dance. She's too fat for any boy to like her, except for Spinner, that is. Too bad Paige likes Spinner too. She convinces Terri to go to the dance, but not before getting her drunk, so she'll look like a fool in front of Spinner. There's also a new student in Mr. Simpson's class: Sean Cameron, who has fallen behind a year. Emma is intrigued, despite Sean's "bad boy" image. Meanwhile, J.T. and Toby decide to skip the dance to surf pornography on the Internet.

Toby can't stand the idea of Parents Night - the last time his divorced parents were in the same room they had a huge, embarrassing fight.

Ashley and Jimmy's eight-month anniversary is coming up - and so is the question of whether or not to have sex. Paige is playing Juliet opposite Jimmy's English-class Romeo and she's planting doubts in Ashley's mind.

Jimmy is trying to make the basketball team, but with spending all that time practicing, he is behind in school. He can only do one or the other. He convinces Spinner to give him one of his Ritalin pills to boost his energy, but it has bad consequences for both Jimmy and Spinner. Meanwhile, Liberty is sick of writing Ashley's speeches for her, so she wants to take over the morning announcements for one day. Ashley knows Liberty won't be able to do it, but sets her up anyway.

Ashley's father is home from Europe, and Ashley senses something is up with her mom and her dad. They seem to get along really well. Ashley's mom tells her the truth: her dad is gay. After hearing this news, J.T. figures out an easy way to reject Liberty. He tells Liberty he's gay.

Ashley feels smothered by Jimmy and Emma gets her first period.

Emma accidentally spreads a rumour about Liberty and Mr. Armstrong. Spinner finds a bug in this cafeteria lunch.

Sean asks Emma out on a date. Spinner and Jimmy vow revenge on Mrs. Kwan.

Manny wants to join the Spirit Squad. J.T. and Toby are convinced they have a chance to win 1 million dollars.

Terri, Paige, and Ashley enter Degrassi's Lunchtime Cabaret. Emma, Manny, and Toby also do a poetic dance about endangered animals.

It's final exam time and everyone is stressed out. Especially Sean.

Ashley takes ecstasy, threatening to ruin her relationships with her friends.

Summer's over and the Degrassi kids are back...in droves. A neighbouring high school has been amalgamated with the Junior High and things are a bit of a zoo.

Craig's father decides to violently teach his son a lesson about spending time with Joey and Angela. Craig is skilled at hiding the ugly purple bruises as well as the emotional scars but his new friends are still suspicious. Meanwhile, JT dedicates his time to pursuing "an older woman", namely Paige Michalchuk.

Emma is shocked when her mother reveals she has been dating Mr. Simpson. Emma promises that she doesn't have a problem with it but her attitude at school says otherwise. Spinner and Jimmy enter a break dancing contest while Emma and Manny are in a contest of their own over Craig's attention.

Ashley swallows her pride and tries to win her friends back. Her efforts work fairly well but Ashley's arrogant attitude leads to some nasty rumors about her. Toby ends up in over his head when he develops a crush on Spinner's little sister Kendra.

Emma isn't very comfortable when Mr. Simpson offers to help with her science project. Manny lets slip to the entire school that Mr. Simpson is dating Emma's mom. Spinner embraces his newfound reputation as a ladies man but upsets Jimmy when he asks out a girl Jimmy had his eye on.

Craig is delighted to have Joey's trust around the car lot and at home. However, Craig oversteps the boundaries when he takes his friends on a joyride while Joey is out of town for the weekend. Ashley tries to impress her edgy new friend Ellie by getting her bellybutton pierced.

Paige is love struck when she meets Dean, an attractive soccer player from another school. Despite warnings that Dean is too old for her, Paige flirts with him at a party and loves the attention. Things turn sour, though, when Dean pulls Paige into an empty bedroom and forces himself on her.

Paige has a difficult time controlling her emotions after the rape. When Ashley writes an explicit song for their band about rape, Paige can't handle it and finally tells her friends about the attack.

Toby takes extreme measures to make it on the wrestling team while Terri battles vicious teasing when the kids at school discover she is a plus-size model.

Manny has a huge crush on Craig so, naturally, she is ecstatic when he asks her out. Manny has the best date of her life but Craig has a different feeling entirely about their time together. Ellie starts sending "secret admirer" letters to Marco and her jealousies come out when Hazel makes a play for him.

Hazel faces an identity crisis during "International Day" at Degrassi. Feeling ashamed of her background, she lies about her ethnicity, but ends up even more confused when lying doesn't help her feel better about it.

Spike and Snake are finally getting married! Emma is thrilled to be her mother's little helper for everything wedding related but it seems like all their plans start going wrong as the date draws nearer. As if stress about the ceremony wasn't enough, Spike finds out she's pregnant and struggles with whether or not to tell Snake.

Emma takes matters into her own hands and tells Snake about the baby. Snake and Spike have a long talk and decide the baby could be a blessing for them. The happy couple makes it to the ceremony just in time to walk down the aisle in their jeans and T-shirts. The crowd cheers as Spike and Snake kiss, ready to face any difficulties the future may bring.

Just as Marco and Ellie's relationship heats up, Marco's doubts about his sexuality intensify. Toby is head-over-heels for Kendra and wants to spend every waking moment with her but trouble arises when Kendra starts to feel smothered.

JT gets in trouble in science class but he is elated when his punishment is spending a week after school with hot teacher Ms. Hatzilakos. Jimmy and Spinner decide to start a "truth pact," which ends up endangering their friendship.

When Emma agrees to get back together with Sean, he feels like he is on top of the world. Unfortunately, Sean's happiness is short-lived when his home life becomes more desperate and alcohol becomes his coping mechanism.

Liberty is furious she didn't receive a spot on the girls' hockey team. Unable to get over the rejection, Liberty pours all her energy into being a ruthless team manager. Terri freaks out when she reads Paige's palm and finds Paige has no lifeline!

Jimmy and Ashley have finally patched things up and start dating once again. Even though Ashley's style has changed, she assures Jimmy she is still the same girl inside. Meanwhile, Toby and JT learn far more than they ever wanted to know when discussing birth control in health class.

Emma complains to Principal Raditch about the use of genetically modified foods in the cafeteria. When Raditch says they haven't been proved to be harmful, Emma stages a student protest.

Paige is feeling whole again after lots of intensive therapy to help her get over the rape. She is convinced everything is back to normal until she finds out Dean will be at Degrassi for a basketball tournament. The possibility of seeing her rapist face-to-face sends Paige's well-organized world into a tailspin.

Craig is surprised when his father suddenly visits him and tells Craig he wants to be a part of his son's life again. Craig decides to spend more time with his father without telling Joey. Has Craig's dad really changed or will he relapse into his old ways? Meanwhile, JT is in a rough spot when Liberty agrees to tutor him on the condition that he accompanies her to the school dance.

After his father dies, Craig is distraught because of the fight they had the last time they spoke. He tries to get his life back on track but it turns out to be more difficult than he thought. JT makes good on his promise to take Liberty to the school dance, where Spinner and Paige are up against Jimmy and Hazel for Luau King and Queen.

It's the start of the school year. For their upcoming anniversary, penniless Spinner wants to get the perfect present for Paige. His idea: get her the perfect locker, since the one she has been assigned she considers in purgatory. In Spinner's mind, Hazel has the perfect locker, but it will take some swift maneuvering to get Hazel to give it up. Emma has thoughts other than school on her mind. With Spike almost ready to give birth and with Spike and Snake's recent marriage, Emma has been thinking about her biological father, Shane McKay. Spike has told Emma nothing about Shane, except that she wants Emma to have nothing to do with him as he deserted them. All Emma vaguely remembers is meeting Shane once in a hospital when she was three years old, Emma remembering that Shane was wearing a doctor's uniform. Emma does whatever she needs to to locate Shane and know her biological dad.

Through Snake's alumni database, Emma does locate her biological father, Shane McKay, at an address in Stouffville. When she arrives at that address, she sees that it is a medical institution and that Shane, mentally disabled, is a patient. Emma's first thought is that her mother is a heartless woman who deserted Shane during his time of need. Emma's view of her mother changes when she learns the full story and why Spike did not tell her the truth about Shane. But Spike may be in trouble when Shane escapes from the institution and wants to see his old girlfriend. Meanwhile, Spinner managed to get Hazel's locker for Paige, who deems it not to be the perfect locker. In her mind, Jimmy has the perfect locker. Jimmy, knowing that Spinner will probably do anything for the locker, makes a deal with Spinner, one not only that Spinner will find embarrassing to do, but one that Spinner does not realize will put Paige in a bad light.

Feeling like a wallflower, Manny decides to try out a new overtly sexual fashion style at school despite it contravening the school's code of conduct. Her attempt at looking sexy has the affect that she is hoping. The person who shows the most interest in her is her long time friend J.T., who is a bit confused about these new feelings he has for his friend. But he has to work fast to attract her attention as others are also showing interest in her. With her new look however is also a new self-absorbed attitude. Meanwhile, Craig, Marco, Jimmy and Spinner have formed a yet unnamed band. Joey has allowed them to use his garage as a practice space. Joey is vicariously reliving his teen-aged years through the band much to Craig's chagrin.

A group of the kids go to the beach for the day. Despite stating that she will no longer be his cover as his girlfriend, Ellie, who doesn't really get along with most of the others but especially Paige, decides to go along on Marco's invitation. Also along as the chauffeur is Paige's openly gay older brother, Dylan. Dylan, attracted to him, suspects Marco may be gay. Marco, also attracted to Dylan, is not ready to come out, especially to his supposed best friend Spinner, who is openly homophobic. Marco goes out of his way to hide his sexual orientation. This includes showing an interest in team sports and going on a date with an unsuspecting Hazel. Meanwhile, Archie is staying at the Jeremiah's temporarily as he has a cold and Spike does not want him to infect Jack. Beyond ruining his weekend with Ashley as the unexpected chaperon, Craig thinks that Snake's symptoms may be a manifestation of something beyond the common cold.

Spinner does not react well to Marco coming out to him. Without initially actually outing Marco to the general populous, Spinner does whatever he can to freeze Marco out of his life. Spinner spreads the news amongst their closest group of friends, all of who think Spinner is acting like an idiot. Marco will need all the support he can when he learns first hand what it's like to be gay in an intolerant society. A specific incident pushes Marco further in the closet. Meanwhile, Snake's initial medical diagnosis is possible leukemia. He tries to make light of the situation, which affects Emma more than anyone. Regardless of the final diagnosis, his actions, in part because of the possible diagnosis of leukemia, benefit Degrassi as a whole.

Snake's illness is causing a strain on Emma and Sean's alone time. Sean, feeling lost without Emma's support, has thoughts of his old troubled life. He starts to gravitate toward trouble-makers Jay, Alex and Towerz. A fight with Emma over their lack of time alone together turns Sean's thoughts into reality. Sean does whatever he feels he needs to be to be accepted, an act which ends up hurting Emma. Meanwhile, J.T. is hanging out with the in crowd - his new friends - leaving Toby in the lurch. At a sleep-over at Toby's, an embarrassed J.T. has a wet dream over Liberty, which Toby lords over him as blackmail in also being able to hang out with the in crowd.

Things are pretty hot between Craig and Ashley, but he's disappointed that she keeps pulling back from going all the way.

Ellie is facing some stresses in her life. Her soldier father has just been shipped overseas, to which her alcoholic mother does not react well. She has an interview for what she considers her dream co-op job working for Caitlin at the radio station doing stories on social causes, but she's up against "perfect" Paige for the sole position. These stresses end up having a physical manifestation, which Ellie, ashamed, feels she needs to hide. Ellie gets an unexpected source of support. Meanwhile, Terri has been receiving roses from a secret admirer. She suspects it's Toby, but really is hoping it's shy Rick.

Emma decides it's time to move on in matters of the heart when she realizes she has feelings for new kid Chris.

Terri is at the top of her game when she lands the lead in the school play and has a wonderful boyfriend in Rick. However, Hazel is concerned when she notices Rick's overly controlling behavior. Spinner fights feeling jealous when JT starts spending a lot of time with Paige.

The Christmas season brings more than just holiday cheer to Degrassi. Caitlin is confused and lonely when she realizes she still has feelings for Joey, who already has an arrogant new girlfriend. Craig gets caught up in his own lies when he continues seeing Manny behind Ashley's back.

Manny threatens to tell the whole school about their relationship if Craig doesn't dump Ashley once and for all. Joey has trouble getting a grip on his emotions after kissing Catlin; should he stay with Sydney or reunite with the girl who got away?

Emma becomes obsessed with getting Sean busted when she suspects he and his gang are stealing things from Degrassi. Paige, Spinner, and Jimmy enroll in a driver's education class and Paige develops a crush on their instructor.

Manny falls flat at her gymnastics meet because she feels nauseous. When her sickness doesn't go away, Manny begins to worry it may be something more than the flu.

Manny and Craig's pregnancy is outed by the furious Ashley to the whole school during lunch. Their failed practice to take care of Spike's baby convinces Manny, but not Craig, that, at 14, she is not ready for motherhood.

Jimmy, Sean, Ellie, Toby, and Hazel land in Mr. Raditch's Saturday detention. Despite their different cliques and different styles, they come to realize the similarities between them and decide to work together to get through their detention.

Terri wants to give Rick another chance but when she has to choose between her friendship with Paige and her love for Rick, the result is tragic. Sean gets annoyed when Marco keeps tagging along on his dates with Ellie.

Craig is determined to beat his ex-girlfriend Ashley when both of their bands are entered in an upcoming battle-of-the-bands competition. After Joey hurts his back in an accident, Catlin steps in to care for him and his daughter Angela.

The year-end Junior Formal is fast approaching, and Marco is in charge, except when it comes to a date. Problem is, Marco's too nervous to ask Dylan out at all, let alone ask him to the prom.

Paige and Spinner decide to take a day off from school. Paige invites Ashley to come along and Ashley announces she's leaving Degrassi. Paige and Spinner have to show her a good time and try to convince her to stay. Meanwhile, Emma discovers Mr. Simpsons will and worries his chemotherapy has failed.

Sean chooses to move out on his own, meanwhile J.T. attempts to ask Manny to the dance.

The end of the year dance has arrived at last! Jimmy wants everything to be perfect for Hazel but nothing goes as planned. Sean's guilt gets the best of him and he confesses to stealing Mr. Simpson's laptop. Earning Mr. Simpson's forgiveness, however, is going to take much longer than Sean anticipated.

Season 4 begins with Paige, Spinner, Marco, Jimmy, and Hazel entering Grade 11. Spinner buys a car with the money he's earned at The Dot, and Paige receives a summons to testify at the trial of the guy who raped her.

The pressure of the trial combined with confronting Dean sends Paige into a destructive downward spiral. Craig receives a generous 16th birthday present from his late father, which causes a rift between Craig and Joey.

Marco faces unexpected hurdles in the race for Student Council President when his opponent Alex threatens to out him to the entire school at the election assembly. Meanwhile, Liberty and Emma have a confrontation of their own when Liberty starts spending time with Emma's ex, Chris.

Rick returns to Degrassi, professing to be a changed man. Everyone is suspicious Rick might hurt another girl the way he hurt Terri so a plan develops to run Rick out of Degrassi for good. J.T. is frustrated with his relationship with Manny because they have barely even kissed yet. When a mishap leads to Manny seeing J.T. naked, J.T. begins to wonder whether their lack of physical contact is because he can't measure up to Manny's expectations.

Sean and Ellie's relationship reaches the next level when Sean wants her to move into his apartment. Is Ellie ready to leave her turbulent childhood home and live with the love of her life? Meanwhile, Manny takes over the Spirit Squad carwash when Paige falls ill.

Paige is sure she will never be able to pay Spinner back for the damages to his car after she gets fired from the DOT. Toby and Rick start a competition to see who can get the most kisses.

Rick makes friends with Emma and Toby when he steps in as a replacement on the school's quiz show. Things take a turn for the worse when Jay, Spinner, and Alex pull a nasty prank on Rick that embarrasses him in front of the entire school. Rick's vindictive side comes out, leading him to develop a horrible plan for revenge.

Humiliated and furious, Rick returns to Degrassi with a handgun in his backpack and prepares to take revenge on the students of Degrassi for laughing at him. Jimmy sympathizes with Rick and promises to back him up whenever other students harass him. Rick accuses Jimmy of being part of the prank and shoots Jimmy in the back when he tries to run away. Rick then moves on to the next person on his hit list: Emma.

In the aftermath of the school shooting, everyone is grieving and making small steps to moving on. Sean refuses counseling because he claims to have everything under control. As the shock wears off, Sean realizes he may not be as well adjusted as he thinks and ventures home to confront his past. J.T. shuns Toby for having been friends with the school shooter.

Despite everything that transpired between them, Craig and Ashley start to develop a friendship. Craig clashes with his band when he suggests Ashley become their new member. Hazel brings Paige along to a yoga class taught by Mr. Oleander, the hot new teaching assistant.

Craig is suffering from mood swings and Ashley seems to be the only one who can help, Ashley's dad is planning to get remarried, elsewhere J.T. and Liberty attempt to work together on the school musical.

Craig proceeds to embarrass Ashley during the reception at her father's wedding. Things go from bad to worse when Joey confronts him.

Paige attempts to get Mr. O alone, while Spinner is disappointed when Manny becomes interested in a new student.

Ever since the trauma of the shooting, Emma has been distancing herself from her friends and neglecting her typical interests. Emma discovers a scandalous secret when she goes to the ravine with Jay but instead of turning everyone in, Emma decides to join in on the raunchy ravine activities.

Emma keeps her "friends with benefits" relationship with Jay a secret and vows not to tell anyone what goes on at the ravine. But when Emma receives some devastating news, can she keep it to herself much longer? Meanwhile, Jimmy is fed up with being pitied and enlists the help of Craig and Marco to sneak out of the rehab center for a concert by his favorite band.

Everyone is thrilled when Jimmy finally returns to school. Unfortunately for Spinner, Jimmy's return means revealing the truth about what happened that fateful day and dealing with the repercussions. Spinner deeply wants to redeem himself but how can he fully be forgiven for telling Rick that the prank was Jimmy's idea? Danny disapproves of the relationship between J.T. and Liberty.

Ellie starts playing cards for fun with Craig, Alex, Dylan, and other friends. However, Alex raises the stakes when she encourages the group to play with real money. Ellie joins the high-stakes game but ends up gambling with her future rather than for fun. Paige has a secret affair with Mr. O and begins to wonder whether he has been telling her the whole truth.

Paige and Matt Oleander desperately try to keep their relationship a secret but it seems to be an impossible mission when Mr. Simpson spies them together at the park and Manny spreads rumors about them to Hazel. Emma has a ladies night and all her girlfriends are head over heals for Emma's new neighbor, Chester.

Dylan would like more from his relationship with Marco, meanwhile Spinner and Jay attempt to break into Degrassi.

The war between Manny and Paige continues when Paige takes credit for Manny's choreography in the Spirit Squad's last routine of the year. Manny reaches the breaking point and starts plotting appropriate revenge. Catlin interviews Kevin Smith about his new project called "Jay and Silent Bob Go Canadian, Eh!".

Craig is upset Ashley is going away to London for the summer because he fears she will dump him for someone else. He plans to show up in London to surprise her but his romantic gesture terribly backfires. Jay and Silent Bob start shooting their movie and Caitlin makes a big mistake after going to a bar with Kevin Smith.

Craig leaves London heartbroken because of Ashley's rejection. His ever-so-fragile mental stability is pushed to such a breaking point that Craig seeks solace by living in the Degrassi boiler room.