Geronimo Stilton #38 A Fabumouse School Adventure is the 38th volume from the Geronimo Stilton adventure series. The book is written for children who fall within the age bracket of seven to ten years. The books in this series narrate the adventures of Geronimo Stilton and are fictitiously authored by the protagonist himself. Geronimo Stilton, a mouse, publishes The Rodent?s Gazette and lives in the fictitious New Mouse City, in Mouse Island. In this book, he is invited for his nephew Benjamin?s Career Day at school. Geronimo lands himself in a tight spot when he causes a volcanic explosion. In addition to the catastrophe, he also gets stuck in a tunnel in the playground and unintentionally releases a pet gecko out of its cage. The book goes on to narrate what happens next and shows its readers how Geronimo gets out of the sticky situation.