After a mysterious phone call from his cousin Trap, Geronimo sets off for Ratoff in spooky Transratania. The garlic-fuelled town holds many mysteries, not least the residents of Ratoff Castle. Maybe it's the way they sleep during the day, maybe it's the blood-red drink they have with every meal, but there's something not quite right about them ...Who are these mice? And will Geronimo manage to survive the night?