Join Geronimo Stilton as he embarks on a thrilling adventure to discover how to keep our cities and the whole world clean!

When his beautiful hometown, New Mouse City, was swamped with mountains of trash, Geronimo, along with his friend Hercule Poirrat, sets out on a mission to fight pollution. In this inspiring adventure, they learn that small actions, like keeping streets clean, reducing waste, and recycling, can make the world a better place.