On the fifth anniversary of Klaus’ defeat, Marcel is king of the city and welcomes the un-sired vampires to New Orleans, only to find they pose an unexpected threat to his rule, leading him to seek counsel from an unlikely source. Meanwhile, as Hayley closes in on the cure that will allow her to revive Elijah and the slumbering Mikaelsons, she faces a final task that will force her to make a ruthless decision.

After five long years apart, Klaus attempts to reconnect with his daughter, Hope. Even as father and daughter bond, the rest of the family is still in turmoil. Elijah mediates a conflict between Hayley and Freya to determine the best way to protect the family. Meanwhile, in New Orleans, Vincent tells Marcel terrible secrets about his ex -wife, Eva Sinclair, even as they begin their search for a mysterious witch who plans to sacrifice a group of innocent children – including Hope Mikaelson.

Desperate to save her daughter, Hayley turns to Marcel for help uncovering information about the mysterious force that has set its sights on the children of New Orleans. While Klaus remains behind with Hope, Elijah and a reluctant Vincent join the hunt, which puts them on a dangerous collision course with an unlikely new threat. Finally, Freya and Keelin must put aside their differences as they embark on a journey that may alter the power dynamic in New Orleans forever.

After being marked by The Hollow’s dark magic, both Klaus and Marcel experience the symptoms of a malevolent haunting, forcing the two adversaries on a violent collision course. Meanwhile, Hayley and Elijah head out to speak with Mary after Hayley uncovers a mysterious link between the dark magic and her former wolf pack. Finally, as an exhausted Freya risks her own life to cure Klaus’ infection, a guilt-ridden Keelin must decide whether to honor her hypocratic oath and help Freya – or flee the Mikaelson’s forever.

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 it’s discovered that The Hollow’s latest servant is on the loose, Freya places a protection spell on the compound, forcing Klaus, Hayley and Hope to remain inside. Meanwhile, Elijah takes matters into his own hands when Vincent is reluctant to perform a dangerous ritual needed to strengthen their defense against The Hollow. Finally, while Freya enacts a risky plan that brings her face to face with their latest threat, an unexpected twist leaves her life hanging in the balance.

When The Hollow sends a terrifying message to Vincent, he must team with Haley and Freya to embark on a desperate mission to stop the Hollow once and for all - even if it requires a heartbreaking sacrifice. Refusing to allow anyone in his family to pay the high price of defeating their enemy, Klaus makes a surprising alliance and enacts a plan that threatens to change the Mikaelson family forever.

When its discovered that The Hollow is using a magical totem to fuel her power, Freya enlists Rebekah and Klaus’ help to locate and destroy it. Elsewhere, an ultimatum by The Hollow puts Kol at odds with his own siblings, while an unexpected run-in forces Marcel and Rebekah to confront the growing tension between them. Finally, The Hollow’s plan for Hayley leaves her in the fight of her life.

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.

The Mikaelsons find themselves out of options as they face the all-powerful and un-killable entity known as The Hollow. With the life of Hope at stake, Vincent proposes a final, desperate plan – one that will force Klaus, Elijah, Hayley, Rebekah and Freya to make the greatest sacrifice their family has ever endured. Season Finale.

Desperate to see her father Klaus after seven years, Hope resorts to drastic measures to bring her father back to New Orleans. Hayley attempts to minimize the fallout from Hope’s actions, but not before news of what she’s done ripples through the city. Meanwhile, Freya’s guilt over not being able to reunite her family gets in the way of her happiness with Keelin, while Rebekah struggles with her inability to fully commit to Marcel. Finally, struggling without Elijah by his side, Klaus’ murderous rampage throughout Europe leads to an unexpected encounter with Caroline Forbes.

When a mysterious disappearance brings Klaus back to New Orleans, Hope looks forward to the prospect of seeing her father again. However, when the dark magic that had been keeping them apart begins to manifest in dangerous ways across the city, Vincent turns to Ivy for guidance about what it may mean. Elsewhere, Marcel returns to New Orleans amidst increased tensions between the supernatural factions, while Freya makes a decision about her future with Keelin. Finally, Roman’s surprise visit to the Mikaelson compound forces Hope to reveal some dark truths about her family.

Ivy reveals some startling news to Klaus about the dark magic that’s been keeping him away from his family. Elijah turns to some unexpected allies to save Antoinette’s life.

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.

Klaus turns to Davina for help to learn more about a mysterious affliction affecting Hope. On their wedding day, Freya and Keelin make a tough decision about their future together, while Elijah is forced to confront a past memory of Hayley. Finally, Declan’s growing curiosity in the city’s supernatural secrets forces Marcel to step in.

Intent on saving Hope's life, Klaus' plan will change the lives of the Mikaelson family forever.