Moldy Mozzarella! Geronimo Stilton is the Editor-In-Chief of the Rodent’s Gazette, the most fa-mouse newspaper on Mouse Island. In this series of time-traveling adventures, Geronimo’s archenemies, the Pirate Cats, have figured out a way to go back in time and change history for their own benefit. Geronimo and his friends must stop them before they change the world as we know it!
Utah, USA, 1869. Work on the Transcontinental Railroad connecting the east and west coasts keeps suffering mysterious mousehaps. Can it be the dastardly work of Catardone and his band of Pirate Cats? In the unlikely role of deputy sheriff, Geronimo Stilton must once again save the future by protecting the past!