Belladonna Johnson has got used to having parents who are ghosts, and most of the time they're just like other parents. The only problem is, no one can see them but her. When someone catches her having a conversation with thin air, Belladonna is carted off to a foster family. But all is not as it seems - there's something very weird about her new guardians, and something even weirder about their house. Soon Belladonna and her friend Steve are forced to go on another mission to the shadowy underworld - facing more than one bloodthirsty mythical beast along the way . . .