The Originals season 5

In the present (7 years after the events of season 4): Freya and Vincent have become good friends, Hayley is the alpha of the Crescents and Josh is leading the vampires. They meet to plan a festival called Mardi Gras but are interrupted by texts from Marcel, and a phone call from Mystic Falls. Hope has been suspended from the Salvatore School for the Young and Gifted for turning a Crescent wolf, Henry, into a hybrid. Freya is continuing to search for a way to bring the family together. Kol and Davina are married and living in Belize. In New York, Marcel proposes to Rebekah. Elijah is playing the piano in a bar in France, but has no recollection of Klaus when he enters the bar. Each time the siblings come into contact, dark magic occurs. Rumors have spread that Klaus has gone mad, now spending his days killing enemies that may harm his family. Caroline Forbes tracks down Klaus to get him to return to New Orleans to help search for a missing Hayley. Tensions are rising between the factions in New Orleans and Henry kills a popular vampire. The vampires led by Greta storm the compound calling for his death. Klaus is not coping without Elijah, feels Hope is better off without him, and Rebekah realises that Elijah is lost to them. Marcel returns to New Orleans.

Hope has a flashback recalling the reason Klaus has ceased contact with her, however it hurts her very much. Roman, a friend of Hope's from the school, comes to Hope to chat about Henry. Klaus attacks Declan, believing that he should have protected Hayley, and Hope intervenes. Vincent visits a seer called Ivy for guidance. Marcel offers Henry a chance for the future after he faces punishment. Hope reveals to Roman who she really is. He flees when Klaus returns. Hope confesses to Klaus that she is responsible for Hayley's disappearance and that she did it to bring Klaus back. Josh warns Marcel, and Ivy warns Vincent, that Hope will be their downfall. When Klaus and Freya arrive to find Hayley, they find her coffin destroyed and bloodied. Someone frees Henry from his punishment and kills him.

7 years ago: Elijah has left New Orleans and has no idea that he is a vampire. He meets Antoinette in New York and she takes him under her wing. Marcel finds Elijah and tells him to leave the city. Elijah hunts for Marcel to discover his true identity. Afterwards, he goes to France to find Antoinette.

In the present: Elijah and Antoinette are still together and playing piano in a bar. He proposes to her and she accepts. Klaus confronts Antoinette and compels her to leave Elijah. She has been taking vervain and tells Elijah the truth about Klaus. Klaus tells Elijah who he really is and asks him to return to New Orleans, but Elijah repels him, breaking Klaus' heart. He works out that Antoinette has known who he was all along but he still wishes to marry her.

Klaus confronts each faction and threatens them over Hayley's disappearance. Freya visits Hope, who is back in school, to find that she has been searching for Hayley herself. Klaus and Marcel act on a tip-off, but Hayley is gone once again. Angry, Klaus kidnaps a member of each faction and threatens to kill them if Hayley isn't found. Klaus informs Marcel that Elijah is gone. Hayley's crescent birthmark is sent to Klaus, and he flies into a rage and kills two of his hostages. Vincent intervenes before he kills Josh as well. With Klaus now bound, he and Marcel determine that vampires are behind Hayley's disappearance. Greta continues to resist Marcel's leadership, and Hope shares her fears with Roman. As each funeral is held for those Klaus has killed, they declare war on him.

Marcel and Klaus stampede the vampire's household, killing everyone, except Greta, who admits to being the one who kidnapped Hayley. As they bleed her of vervain, she confesses that her husband was killed by Klaus and that Hayley will be delivered to them safely if Hope undergoes the same spell Klaus did to suppress his werewolf side. Marcel contacts Freya, who attempts the spell reluctantly, but Klaus stops it. In France, Antoinette tells Elijah that she had met him before their encounter in New York. Their relationship is strained as Antoinette talks about her father, Auguste, a vampire zealot who slaughtered werewolves, an artist who Elijah and Klaus had threatened in the 1930s. During that time, Klaus ultimately murdered Auguste along with his villagers, claiming that anyone who could pick up a coin laying next to his body would be shown mercy. Auguste's wife scrambles out of their house and picks up the coin, begging Klaus to show mercy on her, her daughter, and her son – respectively Greta, Antoinette, and Roman. In the present, Roman and Hope sneak out of the Salvatore School.

With the two of them being cloaked, Roman eventually leads Hope to Hayley where he chains up Hope and defends his mother's action. Caroline and Klaus also team up to search for her, and on the way reflect on their past. Meanwhile, Freya and Vincent argue about whether they should tell Declan about Hayley's life, with Vincent being afraid of Declan suffering the same fate as Cami. Vincent keeps quiet after seeing that Declan is related to Cami. Greta visits Antoinette where she convinces Elijah to try to stop Klaus from killing Roman. Hayley eventually agrees to having her werewolf side suppressed, which will cause a beacon so Freya and Vincent can track her. Greta, Elijah, Klaus, and Caroline arrive. Caroline is quickly subdued, Hope ends up passing out from Greta, and Roman stands by and watches as Greta and Hayley duel. Elijah and Klaus fight, eventually taking it inside the house. Hayley sacrifices herself to kill Greta and save Klaus and Hope.

Elijah and Antoinette visit the army Greta has created. There, Klaus shows up, bites Antoinette and imprisons them both. When Elijah spots her wound, he decides to make an offer to Klaus: Elijah will restore his memory if Klaus gives Antoinette his blood. When Klaus refuses, Elijah asks Marcel and Vincent, who agree. They conduct the spell which ends up failing. Keelin and Freya reunite in the wake of Hayley's death. Meanwhile, Hope struggles with her mother's death, blaming herself. Klaus tries to comfort her, via astral projection done by Ivy, but Hope ends up pushing him away. Ivy manages to convince him to stay away from Hope, noting predictions of natural disasters made by a seer in the 1700s, which have all come true. The prediction states that if all of the disasters occur, all of the firstborns in New Orleans will die. Eventually, Hayley's funeral occurs, with another prediction happening. Klaus briefly stays with Hope before running off to prevent her from harm. On his path, he ends up trapped in a spell that transports him back to the Mikaelson residence where Elijah is also trapped.

All of the Mikaelson siblings end up trapped in the Chambre de Chasse as well as Marcel. It is there that they find out they are trapped in a spell with representational magic, each one of them having to find a key to unlock a door. Marcel tells them that Hope is planning to draw The Hollow out of all of their bodies. Kol and Marcel then discover a room that had been gone for over a century, meaning Hope could not have known about its existence. They deduce that it was Freya who cast the spell. She ends up vanishing after advising Klaus to let Hope do the spell. Everyone ends up unlocking the door only to enter Elijah's consciousness. There, everyone escapes and Elijah retains his memories, leaving him guilt-ridden and devastated. This results in him leaving Antoinette to mourn Hayley.

Hope blames Elijah for Hayley's death, disregarding the fact that Elijah had lost his memories then. When the whispers in Hope's head grow stronger, Hope visits Declan. Elijah is also there. Hope proceeds to release her anger onto Elijah. Hope confesses to Klaus that by hurting Elijah, the whispers in her head stopped. Meanwhile, the vampires post flyers around the city, warning the werewolves that if they do not evacuate New Orleans, they will be forced out. This threat results in a faceoff between the werewolves and the vampires. When Vincent attempts to burn them, he finally realizes that they have a witch on their side. He realizes that Ivy is in danger and rushes to protect her; however, it is too late and she dies.

After many failed attempts to rid Hope of the voices in her head, Klaus tracks down Roman and takes him. Antionette finds out about his abduction and asks Elijah to try to reason with Klaus. Hope ends up torturing Roman but is unwilling to kill him. Elijah comes up with a plan that will help Hope in ridding her of the voices. Meanwhile, Marcel manages to track down the extremists but ends up getting captured and drained of his venom. Josh arrives to rescue him and in the process Josh ends up dying. In the afterlife, he reunites with Aiden. Antoinette gathers up the extremists in a church and Marcel, Hope, Klaus, and Elijah show up. There, Hope releases her anger, quieting the voices and killing all of the extremists. Unbeknownst to them, Declan and Bill, who were finding documents for Declan up in the attic, are both seriously injured as a result of Hope's magic. Klaus heals Declan, but Bill dies, causing Hope to trigger her werewolf curse.

After Bill's death, Klaus notices a strange symptom present in Hope. He asks Davina for assistance, who conducts a spell but ends up finding out that Hope's condition will only worsen and will eventually kill her. Freya takes advantage of the Mikaelson's reuniting and decides to have her wedding. Freya ends up asking Rebekah to be the maid of honor, Vincent to be the best man, Kol to officiate, and Elijah to walk her down the aisle. Elijah and Vincent turn down the offer. Elijah reminisces about Andrea (who was actually Haley), a woman he met in France. After reading a letter from her, Elijah and Klaus decide to walk Freya down the aisle together. Meanwhile, Declan finds out about Marcel and threatens him, saying that he will gather the humans in retaliation. Marcel and Declan eventually come to a truce.

To save Hope's life, Klaus takes her to Mystic Falls with Elijah. There he asks Caroline to help him with the power of her daughters. His plan is to take out the magic from Hope and to put it in his body. Caroline is not happy about Klaus' decision but she accepts to help him, but Alaric disagrees, and he only accepts too when Klaus tells them he wants to kill himself after the spell. Hope faints and meets her mother, who shows her she has found peace. Hope wakes up in her father's arms. At midnight, while Hope is in transition for her first transformation into a werewolf, Caroline's daughters complete the spell and Klaus prepares to sacrifice himself with a white oak stake he kept hidden for decades in case he ever wanted an end to his existence.

As Klaus attempts to kill himself, he is interrupted by Hope and imprisoned. He hallucinates Mikael, which causes him to break free, and Cami, who stops him from hurting Hope in time for Elijah to snap his neck. Klaus awakens to find that Elijah has absorbed some of the Hollow's magic so he can say his goodbyes. Caroline holds Klaus to his promise years ago to tour New Orleans. She encourages him to say goodbye to Hope and give her closure. Marcel, Rebekah, Elijah, Freya, and Keelin reminisce about Klaus as they are joined by Kol, then Klaus himself. Klaus says his goodbyes to everyone, then to Hope separately. Rebekah is promised the cure to vampirism so she can live a human life, then says goodbye to Klaus and Elijah at a park bench where Klaus intends to stake himself. Vincent agrees to help Freya and Keelin start a family despite having declined to earlier, and Marcel tells the vampires to leave the city. Rebekah finally accepts Marcel's marriage proposal. Elijah reveals his plan to die by Klaus' side, as his life's purpose to redeem Klaus has been fulfilled. They stake each other, destroying the Hollow for good, with their ashes spreading across New Orleans.