For more than a millennium, the Original vampire-werewolf hybrid Klaus Mikaelson and his brother Elijah have fought for their family no matter the cost, but their actions have spawned a legion of enemies. Now surrounded by foes, they enact a brutal strategy that will turn even their friends and family against them, thus fulfilling the prophecy itself and setting the course for season four.
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.
The Mikaelson siblings join Hayley in rescuing Klaus from captivity, and Vincent investigates a haunting that will prove to be much more sinister than he could have imagined.
Klaus tries to reconnect with his daughter and Elijah mediates a conflict between Hayley and Freya. Meanwhile, Vincent tells Marcel terrible secrets about his ex -wife.
Desperate to save her daughter, Hayley turns to Marcel. While Klaus remains behind with Hope, Elijah and Vincent join the hunt. Finally, Freya and Keelin embark on a journey.
Klaus and Marcel show the symptoms of a malevolent haunting, and Hayley and Elijah speak with Mary after Hayley uncovers a link between the dark magic and her former wolf pack.
Klaus and Elijah host a party to lure out a new threat and Vincent uses his magic to help. Meanwhile, Hayley turns to Freya to help unlock her memories about her parents’ death.
When it’s discovered that The Hollow’s latest servant is on the loose, Freya places a protection spell on the compound. Meanwhile, Elijah takes matters into his own hands.
Hayley and Klaus travel to the ancestral world and come face to face with Davina. Meanwhile, Elijah and Marcel are forced into an uneasy alliance, and they meet Alaric.
When The Hollow sends a terrifying message to Vincent, he joins Haley and Freya on a desperate mission to stop the Hollow once and for all. Plus, Klaus makes a surprising alliance.
Klaus requests that his estranged siblings return home to stand by their family against The Hollow. Plus, Freya recruits Hayley for a dangerous journey, and Kol mourns Davina.
Freya enlists Rebekah and Klaus to destroy The Hollow’s power source and an ultimatum by The Hollow puts Kol at odds with her own siblings.
When The Hollow targets the most vulnerable Mikaelson, Klaus (Joseph Morgan) is forced to rely on Vincent. Meanwhile, the King of New Orleans has a deadly backup plan.
In an explosive season finale, the Mikaelsons are out of options as they face the The Hollow. With Hope’s life at stake, Vincent proposes a desperate plan.