Geronimo Stilton Graphic Novels Vol. 7 : Dinosaurs in Action

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.