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

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.