Böcker av Geronimo Stilton

It's feudal Japan of the first Tokugawa dynasty, and the Pirate Cats are trying to be assigned a specific fiefdom by the emperor. Why?

The fiendish felines plan to win as many events as they can, and become legendary athletes. But these cats aren't exactly in playing shape! In order to gain an edge, they bring all sorts of modern-age sports gear to improve their odds of winning. It's up to Geronimo and the gang to foil their scheme and save history.

The Pirate Cats have had their plans foiled by Geronimo Stilton time and time again, due to the help from Geronimo's friend Professor Volt. The Pirate Cats decide to better their odds by getting rid of Professor Volt; kidnapping him and leaving him in the Cretaceous Period - a time when the earth was occupied by dinosaurs.