Determined Rebekah is on a mission to get to the bottom of a recent strange encounter involving Elijah. Davina convinces Marcel to let her attend an annual street music festival.

In the war between Klaus and Marcel, Rebecca stands against her own brother Klaus. The chemistry between Elijah and Hayley gets stronger. Klaus accuses his siblings of distrust and betrayal.

Locals prepare to celebrate the annual Casket Girls Festival in the French Quarter. Davina tries to free Cami from Klaus's mind compulsion. Hayley is forced to make a difficult decision after she receives an unexpected phone call.

Since the original vampires were stuck in the cemetery, Klaus takes any chances to punish his sister with the Original-killer stake.

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.

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

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.

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. Feeling a sense of responsibility for The Hollow’s resurgence, Vincent uses his magic to help the Mikaelsons root out this latest threat. Meanwhile, after uncovering information about who may have been behind her parents’ death, Hayley turns to Freya to help unlock her memories from that fateful day.