After months of being holed up inside his compound, Klaus enlists the help of Elijah and Marcel in plotting his revenge against the Guerrera werewolves, and vows to take down anyone who poses a threat to baby Hope's existence. Elijah watches helplessly as Hayley spirals downward while mourning the loss of her daughter and struggling to adapt to her new hybrid status. Exiled by the Guerrera werewolves, who now control the French Quarter, Marcel is still reeling over the destruction of his vampire family, and attempts to rebuild his home with the help of Josh. Elsewhere, Cami, who is attempting to regain some normalcy in her life, seeks comfort in a surprising place. Last, Davina continues her plan to use Mikael against Klaus, but gets sidetracked when she meets the mysterious, yet charming Kaleb (guest star Daniel Sharman), who holds a few secrets of his own.
As tensions between Elijah and Hayley grow, Klaus steps in and encourages her to regain her position within her werewolf pack. Still under Davina's control, Mikael grows impatient while she attempts to uncover a spell that would protect those closest to her. When Elijah turns to Marcel for help in tracking down a vital piece of information, he is forced to remember a time long ago when they were on better terms. Meanwhile, Davina and Kaleb (guest star Daniel Sharmon) find themselves in a dangerous situation when unexpected visitors show up and crash their dinner. Finally, Klaus grows suspicious after a meeting with Cassie (guest star Natalie Dreyfuss) doesn't go as he had planned.
When Klaus and Elijah receive a cryptic invitation to dinner from their mother Esther, who continues to inhabit the body of Harvest girl Cassie, they find themselves preparing for the worst. With the help of a new witch named Lenore, Klaus, Elijah and Hayley attempt to stay one step ahead of Esther, but things quickly take an unexpected turn. While Elijah finds himself reluctantly teaming up with Gia, a newly-turned vampire, Hayley is faced with an enticing proposition about her new status as a Hybrid after a startling encounter with Esther. Finally, Esther reveals a shocking secret about Klaus' childhood and unveils her ultimate plan for her children.
Knowing that it's only a matter of time before Klaus comes after them, Davina takes Mikael to her family cabin in the woods. When Hayley gets a tip that Vincent is recruiting young, unsuspecting teenagers in order to build a werewolf army, she enlists the help of Elijah and Marcel to rescue the group. After Cami inadvertently lets Klaus in on Davina's whereabouts, she tags along in an attempt to truly understand the deeply rooted hatred he has for his parents. At his mother's urging, Kaleb seeks out Davina in order to locate the missing white oak stake and is caught off guard when he has a dangerous encounter at the cabin. Lastly, Josh, who continues to struggle with his vampire identity, opens up to an unexpected ally.
In order to show Elijah that her plan is what's best for him, Esther forces him to relive a time long ago when he loved a young woman named Tatia. With the help of Marcel, Hayley is determined to find Elijah, who has gone missing, but is torn when she discovers that Klaus is also in trouble. Elsewhere, Cami finds herself in a dangerous situation when Mikael takes her hostage as a way to lure Klaus to him, and Davina makes an upsetting discovery about Kaleb's true identity. Lastly, a unhappy confrontation ensues when Klaus comes face-to-face with Mikael.
Fed up with her antics, Klaus becomes agitated and demands that Esther release Elijah, whom she has captured. However, Esther reveals a few dark secrets from Klaus' past in an attempt to make him an offer he can't refuse. Meanwhile, Oliver ends up in a dangerous situation, prompting Hayley to reconnect with Jackson, who has been living a new life out in the bayou. Elsewhere, Cami, who still believes baby Hope's death was her fault, 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.
When Klaus discovers that Elijah has been afflicted by Esther's magic, he heads to the bayou in search of an antidote, but quickly realizes he's not alone. Armed with intel gathered by Aiden, Hayley teams up with him, Marcel, Cami and Josh and launches a plan to take down Vincent by exploiting his one weakness. Meanwhile, with Esther determined to carry out her plan, Vincent and Kaleb are forced to reconsider their own strategies. Intrigued by Davina's unwavering attempts to create an unlinking spell, Kaleb lets her in on some secrets from his past and brings her to a place he frequented in 1914.
Rebekah, who has spent months away living a normal life with baby Hope, finds herself on the run when she realizes Esther has uncovered her whereabouts. Convinced that Vincent and Kaleb would be powerful allies in his fight to take down Esther, Klaus sets a plan in motion to turn his brothers against their mother. Meanwhile, Hayley is conflicted when she and Jackson stumble upon an ancient ritual that would get their werewolf packs out from under Esther's control, but would require her to make a tremendous sacrifice. Elsewhere, Rebekah is concerned when she notices something is off with Elijah. Finally, Davina takes matters into her own hands by turning to dark magic, and Cami finds herself at the center of Esther's dangerous plan.
After reuniting with her brothers, Rebekah convinces Elijah and Klaus to participate in a family tradition from their childhood.
With Vincent on the loose and hell bent on revenge, Klaus brings Cami to the safe house as he and Hayley return to the compound. Hayley and Jackson devise a plan to bring the vampires and werewolves together to consider a truce, but tensions grow when Vincent places a spell on the compound, trapping the two sides together. Meanwhile, Elijah grows concerned when Rebekah fails to show up at the safe house, prompting Klaus to confront Kaleb for answers. Lastly, after accepting her mother's offer to jump into a new body, Rebekah turns to former Harvest girl Cassie for help when she finds herself trapped inside an insane asylum.
Armed with more power than ever, Vincent creates an elaborate spell that allows him to take the upper hand and trap his brothers Klaus and Elijah. Realizing that Kaleb is also in trouble, Davina has no choice but to team up with the Originals to help. After the deadly events in the previous episode, Marcel must try to calm his volatile pack of suffering vampires, while remembering his days as a solider during World War I when his leadership skills were equally brought to the test. Finally, Hayley finds herself conflicted when she learns that she and Jackson must participate in extreme and unconventional rituals prior to their wedding, which will put them both in a dangerous position.
After a series of strange encounters, Rebekah becomes intrigued by a mysterious girl who has recently arrived to the insane asylum. At the bayou, Hayley struggles with coming clean to Jackson about the secrets she's keeping and is surprised when he shares his own secret involving Hayley's parents. Meanwhile, after learning the details of a particular marriage ritual that Hayley and Jackson must complete, Klaus heads to the bayou to put an end to it, but not before running into Jackson's grandmother. Elsewhere, Vincent remains determined to uncover the secret he knows Klaus is hiding and sets his eyes on Marcel for answers. Lastly, when Davina discovers that Josh and Marcel are in danger, she enlists the help of Kaleb and to rescue them.
More dangerous than ever, Vincent remains one step ahead after joining forces with a powerful figure from his past. As the threat to Hope's life grows stronger, Klaus realizes he has no choice but to place his trust in his siblings to ensure she remains protected. Meanwhile, after being presented with an enticing proposition, Kaleb is forced to make a difficult life or death decision, and Elijah finds himself in the fight of his life after an unexpected visitor arrives at the safe house. At the bayou, Hayley and Jackson continue to prepare for the unification ritual, but things quickly go awry when they 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 Vincent, who may have some knowledge that could help them. Lastly, at the bayou, Jackson's frustrations grow after Aiden questions his leadership skills.
When Eva Sinclair's reemergence leaves Rebekah trapped and helpless, Klaus is forced to put aside his mistrust for Freya in order to save Rebekah's life. Meanwhile, Hayley and Elijah learn more about Eva's unhappy past from Josephine, who then makes a startling revelation about Hayley's future. With time running out to save Rebekah, Marcel turns to a reluctant Vincent for his help to take down Eva, but his plan takes an unexpected turn, as Eva will not go down without a fight.
Desperate to find a way to vanquish Dahlia, Klaus soon finds himself face-to-face with another deadly threat - Mikael. Meanwhile, as Hayley and Rebekah work with Freya to track Dahlia's whereabouts, Elijah and Marcel prepare a safe house in Algiers with the help of Josephine. Elsewhere, determined to protect Hayley and baby Hope, Jackson approaches Hayley with a risky idea that leaves her conflicted. Finally, Aiden finds himself torn between his loyalty to Jackson and his secret alliance with Klaus.
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 stand-off 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, Cami 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.