Klaus Mikaelson, the Original vampire/werewolf hybrid, returns to the magical melting pot that is the French Quarter of New Orleans - a town he helped build centuries ago.

Rebekah arrives in New Orleans at her brother Elijah's insistence, but, concerned that Klaus is up to no good, she seeks help from a reluctant Sophie. Marcel enlists Davina's help.

Betrayal at the masquerade ball? Klaus and Rebekah come together to attempt to unravel Marcel's empire from within, in spite of Elijah's concerns. They enlist help from Sophie.

Determined, Rebekah is on a mission to get to the bottom of a recent, strange encounter involving Elijah. Davina convinces Marcel to let her attend an annual street music festival.

Angered by recent events involving the safety of his unborn baby, Klaus demands answers from Sophie, believing she was involved. Sophie reveals to Klaus and Rebekah a troubling secret from her past. Meanwhile, Marcel asks Klaus to accompany him to the bayou after gruesome remains are discovered, while Rebekah, Sophie and Hayley set off on a mission of their own. Davina confides in an unexpected ally and reveals shocking information about the witches - ultimately leading to a disturbing revelation.

When Klaus discovers Hayley's life is being threatened, he goes to extreme lengths to protect her and their unborn baby. Cami turns to Father Kieran for guidance when she is having a difficult time dealing with the tragic events of her past. Feeling as though he can trust no one, Marcel visits an old friend to seek out some advice, while Davina takes steps to learn how to control her magic. Finally, Klaus delivers some surprising news to Father Kieran.

When someone from Hayley's past makes a startling revelation, she grows concerned for herself and the baby. Amidst growing tensions between them, Klaus and Elijah turn to Sabine for help in locating Hayley, who has gone missing. After making a trip down to the bayou, Klaus has a surprising and dangerous encounter with an unexpected visitor. Meanwhile, Davina makes a surprising connection, and Marcel makes Rebekah an enticing offer that leaves her torn.

In the war between Klaus and Marcel, Rebekah stands against her own brother Klaus. The chemistry between Elijah and Hayley gets stronger. Klaus accuses his siblings of distrust and betrayal.

Klaus tries to get adapted to his new duties as he became the king of the city. He offers Marcel a compromise and he fixes his relationship with his siblings. Davina feels betrayed by Marcel. She finally finds an allay, Cami.

As the French Quarter prepares for its annual celebration of the Casket Girls Festival, Cami suffers through as Davina attempts to free her of Klaus' mind compulsion. Elijah and Marcel form an unlikely alliance as Klaus sets his plan in motion to get Davina back. Once it's known that Davina is missing, Sophie gets in on the hunt to track her down. Meanwhile, Hayley is forced to make a tough decision after receiving an unexpected phone call, and Rebekah sets her own plan in motion when she enlists the help of someone from Marcel's past.

When Davina becomes violently ill and the repercussions soon begin to affect the entire French Quarter, Marcel, Klaus, Elijah and Rebekah rush to find out what is going on. Sophie approaches the others with some startling information about the Harvest Festival and presents a drastic plan to save Davina. Elsewhere, Hayley is racked with guilt as she comes clean to Elijah about her role in Sophie's plan. Last, a sequence of unforeseen events sends shockwaves through the French Quarter.

Marcel, still angered refuses to help Klaus when a gruesome discovery is made. Rebekah is on alert when she uncovers the remnants of a sacrifice down by the docks realizing it's the work of a dangerous warlock from their past. when Elijah gets some information that Rebekah may be in trouble, he and Hayley set off to find her. Camille confronts Marcel, who opens up and shares some details of his past with her, but things quickly spiral out of control when an unexpected visitor shows up. Finally, a violent confrontation ensues when Klaus faces off against a powerful force with an unmatched advantage over him.

Father Kieran finds himself in a great deal of trouble. Someone Marcel and Rebekah once knew threatens to expose secrets they've kept buried for nearly a century.

Rebekah's past comes back to haunt her.

In a series of flashbacks to 1919, Klaus opens up to Cami and reveals details of the devastating secret Rebekah and Marcel were trying to keep from him. Elijah forms an unlikely alliance with Monique and asks for her help in locating Sabine. Elsewhere, Thierry is reluctant to get involved when Marcel and Rebekah approach him with a plan to take down the witches. Meanwhile, in the bayou, Hayley is at her wits' end and holds Sabine hostage in an attempt to get information that will reverse the curse on Hayley's werewolf clan.

Since the original vampires were stuck in the cemetery, Klaus takes any chances to punish his sister with the Original-killer stake.

As the baby's due date draws near, Klaus and Elijah embark on a search for Hayley, while Hayley determines to do whatever it takes to keep her unborn baby safe and away from the witches. Francesca takes a meeting with Oliver and Jackson to determine the future of the werewolves in New Orleans. In the aftermath of a surprising attack on Marcel and his vampires at the compound, Davina and Cami join resources to take down Klaus. Finally, in a desperate move to protect those most important to him, Klaus makes a heartbreaking decision.

Hayley struggles with her powers. Marcel sides with Klaus and gets revenge over the wolves. Esther is busy plotting her own plans. Everyone wants control over the city.

Rebekah is on the run with baby Hope.

Rebekah persuades Klaus and Elijah to take part in a family tradition from their childhood.

Finn puts a spell on the compound, trapping wolves and vampires. Klaus takes Cami to the safe house, then confronts Kol about Rebekah's whereabouts.

Rebekah becomes interested in a girl. Hayley struggles with coming clean and is surprised by something Jackson admits. Klaus learns something and heads to confront Hayley. Vincent sets his eyes on Marcel for answers to what Klaus is hiding.

With time running out, Klaus' ultimate plan to protect baby Hope at all costs continues to take shape. As tensions between the siblings come to a head, Camille reveals a vital piece of information that causes Elijah and Rebekah to reconsider their plan of attack against Dahlia. Davina finds herself one step closer to fulfilling the promise she made to Kol, while Freya is forced to take drastic measures to protect herself against Dahlia. Elsewhere, Marcel has to put aside his fury at Klaus in order to protect himself and everyone in their sire line. Meanwhile, Vincent finds himself torn between the prospects of a magic-free life away from New Orleans and a personal obligation to protect Davina. Finally, with their risky plan in place, the Mikaelson siblings prepare for the fight of their lives.

Klaus's family has yet to forgive Klaus's actions. Klaus's old friend decides to show up and show him Chaos. While Elijah tries to hunt werewolves down to protect Hayley leaving Freya on nanny duty. Meanwhile Marcel's has organized another vampire community, while Davina is learning to control the coven as their leader only to find it's not as easy as it looks and seeks help from Hayley.

Hayley and Jackson look after Davina after she made some enemies, meanwhile Elijah asks Marcel with help to do with Triston, Cami and Vincent keep an eye out for Lucien when things go awry; Klaus reunites with his old love and hears secrets he never would think of before now.

When Elijah and Freya realize that Rebekah may be the target of The Strix's latest plan, they do whatever it takes to protect her. Klaus spends time with Aurora to figure out where her loyalties lie, while a dangerous run-in with a member of The Strix leads Hayley and Marcel to make an unsettling discovery.

When a dangerous affliction threatens to expose one of her siblings, Freya searches for a way to reverse the crippling curse, even as she finds herself the target of the Strix's latest plan. Elsewhere, Klaus keeps a watchful eye over Cami while she attempts to help Detective Kinney, whose life has begun to spiral out of control as a result of Lucien's compulsion. Meanwhile, a confrontation with Marcel causes Vincent to reevaluate his decision to stay out of witch business, and Hayley's attempt at a quiet Christmas with Jackson and Hope results in an unexpected surprise.

Elijah learns that Aya might have knowledge about an elusive weapon that can take down Original Vampires for good. Davina receives a tempting offer which brings her closer to reuniting Kol.

When its discovered that Freya has been kidnapped and is in the hands of a dangerous new threat, the Mikaelson brothers are forced to put aside their differences in order to save her before it's too late. Following a lead that brings them to Mystic Falls, Elijah and Finn run into deputy Matt Donovan, who does not take well to new vampires in his town. Meanwhile, Klaus and Hayley work together to uncover the motive behind one of Lucien's secret agendas, while a troubling shift in Kol's behavior leaves Davina concerned for their future together.

After months of thwarting off dangerous threats and deadly attacks, the Mikaelson siblings finally come face to face with the one person that could lead to their ultimate demise. With the stakes higher than ever and the compound overrun by an army of his oldest sworn enemies, Klaus is put on trial for centuries of atrocities he's committed. Meanwhile, Marcel, who has been spiraling out of control following an act of betrayal by those closest to him, is stunned by the unexpected arrival of someone from his past. Finally, Elijah, Freya and Kol frantically search for a way to save their family before it's too late. Hayley also appears.

After being cured and woken, the Mikaelson siblings join Hayley in an effort to rescue Klaus from captivity, even if they must face Marcel in the process.

After five long years apart, Klaus attempts to reconnect with his daughter, Hope. Elijah mediates a conflict between Hayley and Freya to determine the best way to protect the family.

Rebekah and Kol return home to stand by their family against the Hollow. Freya recruits Hayley for a dangerous journey. Marcel leads a hunt for the Hollow. Kol considers the lengths he'd go to see Davina again.

When it's discovered that The Hollow is using a magical totem to fuel her power, Freya enlists Rebekah and Klaus' help to locate and destroy it.

When The Hollow targets the most vulnerable Mikaelson, Klaus is forced to rely on Vincent, who believes he can use The Hollow's own dark magic to defeat their enemy for good.

The Mikaelsons find themselves out of options as they face the all-powerful and un-killable entity known as The Hollow. With the life of Hope at stake, Vincent proposes a final, desperate plan.

Desperate to see her father Klaus after seven years, Hope resorts to drastic measures to bring him back to New Orleans.

As pressing matters rage on in New Orleans, the Mikaelson siblings find themselves forced to set aside their differences and work together to escape a "chambre de chasse."

Klaus turns to Davina for help to learn more about a mysterious affliction affecting Hope. On their wedding day, Freya and Keelin make a tough decision about their future together, while Elijah is forced to confront a past memory of Hayley. Finally, Declan's growing curiosity in the city's supernatural secrets forces Marcel to step in.

Intent on saving Hope's life, Klaus' plan will change the lives of the Mikaelson family forever.

Rebekah persuades Klaus and Elijah to take part in a family tradition from their childhood.

When Elijah and Freya realize that Rebekah may be the target of The Strix's latest plan, they do whatever it takes to protect her. Klaus spends time with Aurora to figure out where her loyalties lie, while a dangerous run-in with a member of The Strix leads Hayley and Marcel to make an unsettling discovery.

Since the original vampires were stuck in the cemetery, Klaus takes any chances to punish his sister with the Original-killer stake.

Rebekah is on the run with baby Hope.

As the French Quarter prepares for its annual celebration of the Casket Girls Festival, Cami suffers through as Davina attempts to free her of Klaus' mind compulsion. Elijah and Marcel form an unlikely alliance as Klaus sets his plan in motion to get Davina back. Once it's known that Davina is missing, Sophie gets in on the hunt to track her down. Meanwhile, Hayley is forced to make a tough decision after receiving an unexpected phone call, and Rebekah sets her own plan in motion when she enlists the help of someone from Marcel's past.

When a dangerous affliction threatens to expose one of her siblings, Freya searches for a way to reverse the crippling curse, even as she finds herself the target of the Strix's latest plan. Elsewhere, Klaus keeps a watchful eye over Cami while she attempts to help Detective Kinney, whose life has begun to spiral out of control as a result of Lucien's compulsion. Meanwhile, a confrontation with Marcel causes Vincent to reevaluate his decision to stay out of witch business, and Hayley's attempt at a quiet Christmas with Jackson and Hope results in an unexpected surprise.

Rebekah arrives in New Orleans at her brother Elijah's insistence, but, concerned that Klaus is up to no good, she seeks help from a reluctant Sophie. Marcel enlists Davina's help.

Rebekah and Kol return home to stand by their family against the Hollow. Freya recruits Hayley for a dangerous journey. Marcel leads a hunt for the Hollow. Kol considers the lengths he'd go to see Davina again.

Rebekah's past comes back to haunt her.

Rebekah becomes interested in a girl. Hayley struggles with coming clean and is surprised by something Jackson admits. Klaus learns something and heads to confront Hayley. Vincent sets his eyes on Marcel for answers to what Klaus is hiding.