The Munroe family are going away on vacation and, to their horror, Harold and Chester discover they're both going to be boarded in a pets' home - luxuriously called Chateau Bow Wow. Lucky Bunnicula is going to the Munroes' neighbour, so at least he won't be around to give them the spooks . . . But straight away Chester sniffs out supernatural goings-on. For a start Georgie the poodle has gone missing and then there's the mysterious werewolf-like howling coming from the daschund's place. Chester is adamant that the two are connected. Harold has his doubts - Chester can get a little carried away sometimes, but then again - he's got a point . . .