Several sheep have recently disappeared, and other creatures have fallen prey to a shadowy figure. The theory of a werewolf might be just a wild fairy tale, but when a human is killed, it becomes clear that even fantasies can be fatal. Miss Maple, Mopple and the rest of the flock, with the help of their goat neighbours, follow the werewolf's trail in a desperate attempt to stop the killings with sheep logic, courage, and concentrated food.