The Guardian of the Mist has disappeared, and Dark forces within Ghostworld have arisen. Caught in the middle of an impending war between good and evil, Andy learns what Elizabeth already knows—that he cannot return to the world of the living until the dark fire of evil is stopped.

Before he can leave Ghostworld and return to the living world, sixteen-year-old Andy Moser, accompanied by his ghost friend, Elizabeth, must locate the ghost who has stolen the secret of death from the Grim Reaper