A supernatural horror story, Damned is set in Gotham City outside the continuity of the mainstream DC Universe. The series begins shortly after the events of Joker, when the criminal Joker seemingly dies during a fight with his archenemy, the superhero Batman, who has no recollection of the event. Batman enlists the help of the English exorcist John Constantine, and the two delve into Gotham's supernatural underworld to solve the mystery. During their investigation, they meet many of DC's magic-based characters, including the Spectre, Etrigan, Deadman, Zatanna, the Swamp Thing, and the Enchantress.