GERONIMO STILTON Book 8: ATTACK OF THE BANDIT CATS
Geronimo's in big trouble! The phone book he publishes is full of wrong numbers, and everyone in New Mouse City is furious with him. When Trap invites him to go on a quest to discover a mysterious moving silver island in the Claw Islands, he agrees --- just to get away. Thea and Benjamin join them for the adventure.
They set off in a hot-air balloon and discover that the "island" is actually a silver ship "felined" by pirate cats. Soon, Geronimo and his gang are captives of the evil cats, who try to get them to reveal the location of Mouse Island. When the mice refuse, they find themselves being fattened up for the cat crew's feast. Will they be able to escape?