A mere day has passed since Will and Bill did same before Will's body is laid to rest. Will is then thrust into Erebus, which confuses him for a while, before remembering, with some difficulty, that this was where he was destined to go regardless. A mysterious figure emerges, offering Will the choice to move on straight to the afterlife, or to go back to the living world to perform one simple, not-so-simple task:

Capture escaped souls, evil ghosts, wraiths, haunting spirits, ghouls, ghasts,spectres, shadows, and the like. Simple really. Except he'd get no help from the ponies this time around; he'd have to go back as a wraith.

There is a plus: he's got a few friends whom he can call on to assist him. Though, that is offset by the fact that he's kind of amassed a few enemies in the world of the dead. He's going to have a very difficult time getting rid of these dead without much help. Essentially, it'd be another Thursday were he alive.