With one solved mystery under their wooly belts, the time has come for the sheep of Glennkill to explore Europe. Together with their new shepherdess, Rebecca, they move into their winter quarters in the shadow of a French chateau. But their new home is far from idyllic. A number of sheep from a previous flock have disappeared, and deer are dying unnatural deaths in the forest. The strange goats from the neighboring pasture have a theory: a werewolf. Could that be real, or just a fantasy?

When a human falls victim, it becomes clear that even fantasies can be fatal. And the last thing the sheep want is to lose another shepherd. With the help of the goats next door, they follow the werewolf's trail in a desperate attempt to save both themselves and Rebecca with sheep logic, courage, and woolpower.

This clever, tense mystery features the ultimate amateur sleuths as they ponder curious human motives, attempt to change their fortunes by eating tarot cards, and borrow a harebrained scheme from a not-so-secret spy in an attempt to thwart the beast that's been stalking them.