Klaus returns to the French Quarter of New Orleans, a place where he helped build centuries ago. Now he sees that it has been taken over by his former protege Marcel. Camille, a psychology student, doesn't believe in supernatural beings. However, she finds herself drawn to Klaus. Meanwhile, Hayley and Elijah wait to see what Klaus will do next.

Rebekah arrives in New Orleans at her brother Elijah's insistence, but, concerned that Klaus is up to no good, she seeks help from a reluctant Sophie. Marcel enlists Davina's help.

Betrayal at the masquerade ball? Klaus and Rebekah come together to attempt to unravel Marcel's empire from within, in spite of Elijah's concerns. They enlist help from Sophie.

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.

Klaus becomes angry over recent events involving the safety of his unborn baby and demands answers from Sophie. Meanwhile, gruesome remains are discovered in the bayou; and Davina reveals some shocking information about the witches.

Klaus goes to extreme measures to protect Hayley and their unborn baby when he learns Hayley's life is being threatened. Meanwhile, Cami turns to Father Kieran for guidance. Marcel seeks advice from an old friend. Davina tries to control her magic.

Hayley goes missing after someone from her past makes a startling revelation. Klaus has a dangerous encounter with an unexpected visitor. Davina makes a surprising connection. Marcel makes Rebekah an enticing offer that leaves her torn.

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.

Klaus tries to get adapted to his new duties as he became the king of the city. He offers Marcel a compromise and he fixes his relationship with his siblings. Davina feels betrayed by Marcel. She finally finds an ally, Cami.

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.

Davina becomes violently ill and the repercussions affect the entire French Quarter. Sophie delivers some startling information about the harvest festival and presents a drastic plan to save Davina. Hayley, racked with guilt, confesses to Elijah about her role in Sophie's plan.

Tension between Marcel and Klaus results in Marcel refusing to help Klaus with a gruesome discovery in the Cauldron. Rebekah revisits her past when she finds the remnants of a sacrifice by the docks - the work of a dangerous warlock she has come across before. Klaus battles, but his opponent has an unfair advantage.

Marcel and Rebekah fret over whether secrets hidden for nearly a century are about to be exposed. Father Kieran deals with a witch from his past. Hayley and her werewolf clan enjoy a party. Sophie discovers something shocking at the cemetery. Klaus takes some dangerous measures that will affect everybody.

In 1919, Rebekah worked in a sanatorium. She finds herself back there and locked up as a witch who is seeking revenge plans to reveal her darkest secrets. Elijah makes a decision that puts the others in further danger.

Rebekah and Marcel have been trying to keep a secret from Klaus which may come to the light as we flashback to 1919. Elijah and Monique bond. Hayley takes Sabine hostage to try and get information on reversing the curse on her clan.

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

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

Genevieve asks Elijah to allow her coven to publicly celebrate a traditional feast day, where members of the community offer the witches gifts in return for blessings. Meanwhile, Elijah makes plans to restore his home to its former glory; and Klaus sends Cary, a werewolf from his own line, to find a missing piece of family history.

A surprising enemy is confronted by Hayley. Klaus has some nightmares about his father and is forced to examine his own relationship with his adoptive son.

Cami feels threatened, as Marcel rallies an army to take back control of the city.

Hayley atempts to save her unborn baby from the witches. Francesca meets with Oliver and Jackson to decide the future of the werewolves in New Orleans.