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.

Elijah is taking control of the quarter and receives a surprising offer, and they know how to throw a party.

"Genevieve asks Elijah to allow her coven to publicly celebrate a traditional feast day, where members of the community offer the witches gifts in return for blessings. Monique and Genevieve disagree over what the ancestors want from them, and Genevieve reveals her plan to build the witches' power. When Elijah focuses his attention on restoring their home to its former glory, Klaus accuses him of doing it only to impress Hayley . Next, Klaus sets a new plan in motion by finding Cary , a werewolf from his own line, and sending him off to find a missing piece of family history. Marcel lets Thierry in on his new plan to rebuild his power, but Diego has his own ideas about the future. At the Feast of the Blessings, Monique and Genevieve try to use the ceremony to teach Davina a lesson, but Klaus intervenes and gives Davina a surprisingly important gift. While Hayley struggles to decide where her loyalties should lie, the ceremony explodes into violence."

Desperate to help Kieran, Camille insists on an unconventional treatment, but her good intentions lead Kieran to a violent episode. After Klaus and Elijah disagree over the best way to handle the Crescent Wolves, Elijah makes a trip to the bayou, where he is witness to a horrific explosion that only adds to the hatred and mistrust among the communities. While Jackson and Elijah work to save the wounded, Hayley learns a surprising piece of her family history from Marcel.

Klaus and Elijah enact a plan to collect the sacred stones needed by Genevieve in order to forever change the fates of Hayley and the werewolf community. Realizing that Klaus' plan will lead to the extermination of all French Quarter vampires, Marcel rallies an army determined to take down the Mikaelsons and regain control of the city. Davina warns Josh to leave town as she is forced to make a fateful decision that will turn the tide of war. Meanwhile, Francesca threatens Cami, who attempts to decipher a code that results in a surprising revelation among the city's factions.

Cami teams up with Marcel and Gia after she becomes suspicious of her faculty advisor Vincent. Lastly, in a surprising turn of events, Klaus comes face-to-face with a visitor from his past.

Going after everything Esther loves. Klaus and Hayley seek an antidote for Elijah in the bayou assisted by Marcel and Josh. Kaleb takes Davina to an old hangout.

Rebekah is on the run with baby Hope.

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.

Finn captures his brother's spirits, while the vampires remain trapped and their hunger grows.

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.

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.

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.

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.

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.

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.

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.

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.