After months of being holed up inside his compound, Klaus enlists the help of Elijah and Marcel in plotting his revenge against the Guerrera werewolves, and vows to take down anyone who poses a threat to baby Hope's existence. Elijah watches helplessly as Hayley spirals downward while mourning the loss of her daughter and struggling to adapt to her new hybrid status. Exiled by the Guerrera werewolves, who now control the French Quarter, Marcel is still reeling over the destruction of his vampire family, and attempts to rebuild his home with the help of Josh. Elsewhere, Cami, who is attempting to regain some normalcy in her life, seeks comfort in a surprising place. Last, Davina continues her plan to use Mikael against Klaus, but gets sidetracked when she meets the mysterious, yet charming Kaleb (guest star Daniel Sharman), who holds a few secrets of his own.
Family is power. The Original Vampire family swore it to each other a thousand years ago. They pledged to remain together, always and forever. Now, centuries have passed and the bonds of family are broken. Time, tragedy and hunger for power have torn the Original Family apart. When Klaus Mikaelson, the original vampire-werewolf hybrid, receives a mysterious tip that a plot is brewing against him in the supernatural melting pot that is the French Quarter of New Orleans, he returns to the city his family helped build. Klaus' questions lead him to a reunion with his diabolical former protege, Marcel, a charismatic vampire who has total control over the human and supernatural inhabitants of New Orleans.
Determined to help his brother find redemption, Elijah follows Klaus and soon learns that the werewolf Hayley has also come to the French Quarter searching for clues to her family history, and has fallen into the hands of a powerful witch named Sophie. Tensions between the town's supernatural factions are nearing a breaking point as Marcel commands his devoted followers and rules with absolute power. For Klaus, the thought of answering to his powerful protege is unthinkable, and he vows to reclaim what was once his - the power, the city and his family. While they wait to see if their sister Rebekah will leave Mystic Falls and join them, Klaus and Elijah form an uneasy alliance with the witches to ensure that New Orleans will be ruled by The Originals once again.