New Mouse City was in a panic! A strange epidemic had broken out. Mice everywhere -- including me, Geronimo Stilton -- were covered in weird blue pimples! I immediately called upon Mouse Island's most famouse doctor and researcher for help. He set to work with his team to find the cure . . . but someone was trying to stop him. Moldy mozzarella, I didn't want to be blue forever!
From an idea of Elisabetta Dami
