Enter the world of Geronimo Stilton, where another funny adventure is always right around the corner. Each book is a fast-paced adventure with lively art and a unique format kids 7-10 will love. After being enrolled in the Song Festival, Geronimo Stilton's song, "Welcome to New Mouse City," goes to the top of the charts and makes Geronimo a star, but very few CDs are sold after the festival. Will Geronimo and his detective friend, Hercule Poirat, be able to solve the mystery?