Who is Geronimo Stilton? That's me! I run a newspaper, but my true passion is writing adventure stories. Here in New mouse City, the capital of mouse Island, my books are all bestsellers! My stories are funny, fa-mouse-ly funny. They are whishker-licking-good tales, and that's a promise! Run For The hills, Geronimo! Finally, I was about to leave for a relaxing vacation all by myself. I was ready to kick back and connect with nature. But somehow, my peaceful trip turned into a crazy treasure hunt in the beautiful Black hills of South Dakota-with the entire Stilton clan in tow! Our journey even included a hot-air balloon ride to Mount Rushmore. Holey cheese! What an adventure!