Geronimo Stilton is the editor of the Rodent's Gazette, the most famouse paper on Mouse Island. In his free time he loves to tell fun, happy stories. In this adventure, Geronimo has to face his worst enemies, the Pirate Cats, who have discovered a way to travel back in time and change history...
...This time, Tersilla, Catardone III, and Bonzo accidentally travel back in time and wind up smack dab in the middle of the ice Age! They decide to capture a great Wooly Mammoth and bring it back to the present! Can Geronimo and his friends stop the Pirate Cats' latest crazy scheme in time?