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.

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.