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

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.

Vincent joins forces with a figure from his past. Kaleb is forced to make a difficult life or death decision, and Elijah finds himself in the fight of his life. Hayley and Jackson become pawns in Vincent's dangerous plan.

With the final preparations for her union to Jackson underway, Hayley begins to question whether the ritual will actually work. After arriving to the compound, Elijah has a tense encounter with Klaus and quickly suspects that his brother may be up to something. Meanwhile, Kaleb, who is harboring a devastating secret from Davina, seeks help from Rebekah when he realizes time is not on his side. Lastly, Cami makes a startling revelation involving baby Hope.

When a dangerous run-in with a coven of vengeful witches forces Rebekah to align with Marcel, they quickly discover that the body Rebekah is currently inhabiting has a checkered past. Upon learning that Rebekah is in danger, Elijah seeks out a respected elder witch, Josephine, in the hopes she might offer her assistance. Meanwhile, tensions build when Klaus clashes with Hayley and Jackson over how best to protect baby Hope from Finn, Elsewhere, Freya, convinces Finn to bring her to Mikael, the father she hasn't seen in over a thousand years. Lastly, a confrontation with Freya leaves Elijah and Klaus questioning whether they can trust their long-lost sister.

Suspicious of where her true loyalties lie, Klaus invites Freya to the compound in order to gain more insight into her past with Dahlia. After a series of strange visions,Rebekah begins to realize the body she's inhabiting is attempting to regain control. With Rebekah's life on the line, Marcel puts his bargaining skills to the test when he turns to Finn, who may have some knowledge that could help them. Lastly, at the bayou, Jackson's frustrations grow after Aiden questions his leadership skills. Elijah, Hayley and Cami also appear.

Klaus must put aside his mistrust for Freya in order to save Rebekah's life.

While searching for a way to vanquish Dahlia, Klaus is faced with another threat.

Setting the stage for a bloody showdown, Dahlia gives Klaus and Hayley a deadline to turn over baby Hope. Elijah attempts to convince Klaus that they need to work together in their fight against Dahlia, but Klaus forges ahead with his own dangerous plan, leaving everyone concerned about his next steps. Meanwhile, when Hayley realizes their chances of outrunning Dahlia are slim, she devises a risky plan and enlists Aiden's help. Elsewhere, Freya gives Rebekah and Elijah an ultimatum, and Marcel strategizes on how best to deal with Klaus' erratic behavior.

When Dahlia devises a clever way to get Klaus' attention, she reveals some startling details about baby Hope and leaves him with an enticing proposition to consider. Elsewhere, while Elijah and Freya find themselves with opposing views on how best to handle Dahlia's looming deadline, Rebekah, Davina and Cami work together to come up with their own strategy. Meanwhile, following a tense standoff between Elijah and Jackson in the bayou, Hayley is left to make a difficult decision about her and Hope's future. Finally, Vincent, who is eager to leave his witch past behind him, approaches Davina with an offer that leaves her intrigued.

After discovering that he's been betrayed by his own siblings, Klaus teams up with an unlikely ally and sets off on a warpath, hell- bent on revenge. Amidst the news that Klaus is on the loose, Elijah, Rebekah and Freya move forward with their plan to lure Dahlia to the compound and take her down once and for all. Meanwhile, Hayley and Jackson attempt to escape through the flooded bayou, even as Marcel finds himself hunted by a dangerous new threat. Finally, Davina is presented with an offer that could allow her the chance to bring back Kol, though it will require her to make a life-altering decision.

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.

After discovering that poachers have begun taking out werewolves in the bayou, Elijah and Jackson grow concerned for Hayley's safety when she fails to show up during the full moon. Meanwhile, Davina, the only one with the answer to Hayley's whereabouts, plots ways to use that to her advantage. Elsewhere, Cami approaches Klaus with her theory on who is behind the series of murders in the French Quarter, while Lucien delivers to Elijah an unsettling warning about the war brewing among the sire lines. Finally, after receiving a dire prophecy about the future of the Mikaelson siblings, Klaus takes extreme measures to determine the validity of this potential impending threat.

Klaus seeks to take revenge for the taking of his baby, Hope, by Hayley and Jackson whom Elijah also seem to be against Klaus. Meanwhile Davina tries to lead her coven, and seeks help from Freya to bring Kol back. Hope is kidnapped, meanwhile Klaus is hostage at the attic.

In order to uncover what his old acquaintance Tristan is really up to in New Orleans, Elijah considers attending a gala thrown by a mysterious group of ancient vampires known as The Strix, while Hayley invites herself to attend with him.

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.

Klaus and Elijah plan a Thanksgiving gathering in hopes of negotiating a truce; Vincent and Marcel realize Davina might be in over her head; Cami encounters a new threat.

After learning that Cami's life is in danger and Aurora may be to blame, Klaus is forced to engage in another one of Aurora's devious games and follow a series of clues she's left behind for him. Meanwhile, Elijah, Freya and Hayley take drastic measures against Tristan when they discover he holds a valuable piece of information they need. Elsewhere, Aya gives Marcel an ultimatum that leaves him with a difficult decision to make, while tensions between Hayley and Jackson cause her to reevaluate her involvement in Mikaelson family matters.

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.

Klaus declares war on his enemies. Hayley and Jack become Tristan's pawns.

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.

Klaus ends up in a standoff with an unlikely foe when a weapon that could destroy the Mikaelsons falls into the wrong hands.

Aurora uses Freya as bait to lure the Mikaelson brothers into a trap.

The unexpected arrival of Stefan Salvatore may be the key to helping Freya rescue Klaus and Elijah from a magical trap.

When Klaus learns of Cortez's arrival to vendetta against him, Klaus finds himself dealing with this new threat. Meanwhile, as Cortez begins threatening the lives of innocent residents, Vincent has no option but to assist the vengeful vampire in his plan to take down Klaus.

When rumors begin to spread about the remaining white oak bullet, dangerous foes descend upon New Orleans in an attempt to take down Klaus once and for all. As the threats continue to grow, Elijah urges his siblings to lay low at the compound while Marcel, Vincent and Josh chase down a lead involving a mysterious vampire named Sofya , who may have the answers they're looking for. Meanwhile, tensions inside the compound build as Kol is forced to come face to face with his brother Finn, the person responsible for his death. Elsewhere, Klaus and Hayley seek shelter with her former pack and stumble upon some unsettling news involving the threat against them.

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.

As the city celebrates its annual Jazz Fest, an unlikely team of Mikaelson foes joins forces to take Klaus hostage. Leading the charge to get their brother back, Elijah and Freya face off against a powerful force like none they've ever seen before, while Hayley and Cami set their own risky plan in motion to rescue Klaus. Meanwhile, when Kol's erratic behavior worsens, Davina has no choice but to turn to Marcel and Vincent for help.

Everyone joins together in an attempt to save Cami's life.

In the wake of a ruthless plan that has left their family shattered, Klaus, Elijah and Freya desperately search for a way to take down Lucien once and for all. However, their efforts are put on hold following an urgent plea for help from Kol and Marcel. At Klaus' insistence, Freya and Elijah reluctantly stay behind to offer their help, while Klaus and Hayley head to the bayou after uncovering Lucien's latest plan. Once there, an unexpected showdown between Klaus and Lucien forces Freya to take matters into her own hands, setting off a chain of events that will change all of their lives forever. Vincent and Davina also appear.

After receiving new visions of the looming prophecy, Freya uncovers that her family is on a collision course with a dangerous new enemy. Meanwhile, with the help of Detective Kinney, Vincent and Kol travel to the ancestral world to put a stop to the witches and take back their city once and for all. Elsewhere, Klaus and Elijah confront Marcel after a heartbreaking plan gone wrong has sent him spiraling. Hayley and Davina also appear.

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.

On the fifth anniversary of the Mikaelson's defeat, Marcel is king of the city and welcomes the unsired vampires to New Orleans, only to find they pose an unexpected threat to his rule, leading him to seek counsel from an unlikely source.

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.

While Klaus remains behind with Hope, Elijah and a reluctant Vincent join the hunt, which puts them on a dangerous collision course with an unlikely new threat.

After being marked by The Hollow's dark magic, Klaus and Marcel experience the symptoms of a malevolent haunting. Meanwhile, Hayley and Elijah head out to speak with Mary.

When it's discovered that The Hollow has employed a mysterious servant to do its bidding, Klaus and Elijah host an elaborate party in order to lure the new threat out and uncover its identity.

When it's discovered that The Hollow's latest servant is on the loose, Freya places a protection spell on the compound, forcing Klaus, Hayley and Hope to remain inside. Meanwhile Elijah takes matters into his own hands.

Old wounds are re-opened when Elijah and Marcel are forced into an uneasy alliance. Together, they meet with Alaric who has tracked down a crucial artifact that could help in their fight against The Hollow.

When The Hollow sends a terrifying message to Vincent, he must team with Hayley and Freya to embark on a desperate mission to stop the Hollow once and for all - even if it requires a heartbreaking sacrifice.

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.

When a mysterious disappearance brings Klaus back to New Orleans, Hope looks forward to the prospect of seeing her father again. However, when the dark magic that had been keeping them apart begins to manifest in dangerous ways across the city, Vincent turns to Ivy for guidance about what it may mean. Elsewhere, Marcel returns to New Orleans amidst increased tensions between the supernatural factions, while Freya makes a decision about her future with Keelin. Finally, Roman's surprise visit to the Mikaelson compound forces Hope to reveal some dark truths about her family.

In the immediate aftermath of having his memory erased by Marcel, Elijah awakens to find himself in the middle of nowhere and without a clue as to who he is. Unable to control his instinctive vampire ways, Elijah encounters Antoinette, a beautiful and free-spirited vampire, who helps him navigate his new life. However, a run-in with Klaus threatens to destroy the peace he's finally found.

Frustrated by the lack of progress made in the search for Hayley, Klaus turns up the heat by taking hostages from each of the three New Orleans supernatural factions. Freya goes to Mystic Falls to check on Hope, who has been sent back to the Salvatore School. Vincent seeks guidance from Ivy after learning that Klaus' erratic behavior is escalating.

A mysterious clue sent to Klaus (Joseph Morgan) leads him one step closer to finding Hayley. Antoinette (guest star Jaime Murray) opens up to Elijah (Daniel Gillies) after her past comes back to haunt her. Meanwhile, Marcel (Charles Michael Davis) makes a decision that puts him at odds with Klaus. Finally, Hope (Danielle Rose Russell) takes matters into her own hands to fix the mess that she's created.

Hope sets off on a dangerous mission to end the mess she started, and Klaus turns to Caroline for help when he discovers Hope's plan. Plus, Vincent and Freya clash over Declan.

Ivy reveals some startling news to Klaus about the dark magic that's been keeping him away from his family. Elijah turns to some unexpected allies to save Antoinette's life.

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."

Vincent, Marcel and Josh work to clean up the city, when an uprising of purist vampires leads the supernatural factions into a deadly showdown. Hope faces the consequences of trying to bring her family together. Freya makes a big decision.

Klaus helps Hope cope with her pain in an unconventional way. A figure from Elijah's past comes back seeking help. Elsewhere, Marcel takes on the nightwalkers, while Vincent deals with the fallout of a fateful decision.

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.

With Hope facing a life-threatening affliction and deteriorating quickly, Klaus travels to Mystic Falls to seek help from Caroline. Tasked with keeping Hope preoccupied in Mystic Falls, Elijah comes to a heartbreaking realization about his niece. Meanwhile, at the Salvatore School for the Young and Gifted, a run-in with Alaric Saltzman throws a wrench into Klaus' plan.

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

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.

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.

After being marked by The Hollow's dark magic, Klaus and Marcel experience the symptoms of a malevolent haunting. Meanwhile, Hayley and Elijah head out to speak with Mary.

When it's discovered that The Hollow's latest servant is on the loose, Freya places a protection spell on the compound, forcing Klaus, Hayley and Hope to remain inside. Meanwhile Elijah takes matters into his own hands.

Suspicious of where her true loyalties lie, Klaus invites Freya to the compound in order to gain more insight into her past with Dahlia. After a series of strange visions,Rebekah begins to realize the body she's inhabiting is attempting to regain control. With Rebekah's life on the line, Marcel puts his bargaining skills to the test when he turns to Finn, who may have some knowledge that could help them. Lastly, at the bayou, Jackson's frustrations grow after Aiden questions his leadership skills. Elijah, Hayley and Cami also appear.

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 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.

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.

Frustrated by the lack of progress made in the search for Hayley, Klaus turns up the heat by taking hostages from each of the three New Orleans supernatural factions. Freya goes to Mystic Falls to check on Hope, who has been sent back to the Salvatore School. Vincent seeks guidance from Ivy after learning that Klaus' erratic behavior is escalating.

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.