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.

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.

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

Klaus wants Hayley to re-establish herself in her pack. Mikael is impatient under Davina. Cassie arouses suspicions.

Rebekah is on the run with baby Hope.

A discovery is made about the body Rebekah is living in. Klaus clashes with Hayley and Jackson.

With tension running as high as ever, Klaus and Elijah are forced to come together in order to uncover Lucien’s true motives in New Orleans. Cami is caught off guard when she finds herself face to face with Lucien and is surprised when he reveals some unexpected information about his past with Klaus. Elsewhere, a mysterious figure presents an enticing offer to Marcel, while Hayley turns to an unconventional way of coping with her current situation. Finally, an old acquaintance from Elijah’s past arrives in New Orleans and delivers some startling news involving the growing threat to the Mikaelson siblings.

With a dire prophecy looming over them, Klaus and Elijah invite Lucien, Tristan and Aurora to a Thanksgiving gathering in an attempt to negotiate a truce. When Aurora reveals that she has powerful leverage over Klaus, Hayley and Freya take matters into their own hands, leading to a deadly three-way confrontation. Elsewhere, Marcel and Vincent are forced to take drastic measures when they realize Davina may be in over her head, and Cami finds herself face-to-face with a dangerous new threat.

Determined to make her ultimate move against the Mikaelson brothers, Aurora uses Freya as bait to lure Klaus and Elijah into a dangerous trap. Meanwhile, after being recruited by The Strix's powerful coven of witches to perform a spell that could save the lives of her closest friends, Davina finds a way to conjure up Kol, the only person who may know the key ingredient to completing the spell. Finally, Hayley is forced to make a heartbreaking sacrifice.

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.

After being cured and woken, the Mikaelson siblings join Hayley in an effort to rescue Klaus from captivity – even if they must face Marcel in the process. Meanwhile, Klaus’ demons materialize in unexpected ways as he suffers from the effects of the Tunde Blade, and Vincent investigates a haunting that will prove to be much more sinister than he could have imagined.

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.

When The Hollow targets the most vulnerable Mikaelson, Klaus is forced to rely on Vincent, who believes he can use The Hollow’s own dark magic to defeat their enemy for good. Meanwhile, as Marcel worries that Vincent’s plan might backfire, the King of New Orleans decides on a deadly backup plan of his own. Elsewhere, after falling victim to The Hollow’s manipulations, Hayley struggles to figure out Hope’s future in New Orleans, while Freya must confront her darkest fear.

In the immediate aftermath of having his memory erased by Marcel, Elijah awakens to find himself in the middle of nowhere and without a clue as to who he is. Unable to control his instinctive vampire ways, Elijah encounters Antoinette, a beautiful and free-spirited vampire, who helps him navigate his new life. However, a run-in with Klaus threatens to destroy the peace he’s finally found.

As Vincent, Marcel and Josh work to clean up the city, an uprising of purist vampires leads the supernatural factions into a deadly showdown. Hope's attempt to bring her family back together leaves her struggling with the consequences. Finally, Freya makes a life-changing decision.