For cavemouse Geronimo Stiltonoot, life is one prehistoric problem after another!

This time, Geronimo is competing in a daring race to Boulder Bay and back. The journey is dangerous, but the prize is worth it not only will the winner bring home rare hot lava peppers for the village cheesemaker, theres also a big reward waiting at the finish line!

But theres one small problem Geronimo is stuck with a lazy, slow city autosaurus, the worst racing partner imaginable. Can he cross the finish line or will he go extinct on the way?