Everyone loves Bruce, the plump and furry cat, who whips up yummy treats for everyone to eat. But when the trifle he makes for Queen Victoria nearly lands on her head he needs to lie low for a while. Fortunately Bruce's friend, Fergal the cormorant, inherits a house and an estate on Howly Island that comes with Mrs Bucket, the kind housekeeper but terrible cook. Stevie, Bruce and Fergal head there, unaware that they are being followed by someone or something. Soon the werewolves on the island are after them, and in a case of mistaken identity Fergal has a narrow escape from someone even more evil than the wolves. Only a silver bullet can kill a werewolf, but the detective who comes to the rescue has just two bullets left and reinforcements are far away. Even Mrs Bucket's deadly rock buns can't hold the werewolves off for ever. Is there anything they can use instead? And can Stevie escape from the evil sand witch before she makes a tasty sandwich out of him?