Have you ever had a friend like our Geronimo stilton secret agent friend (OOK) I can't reveal his name. If you have one then be ready to have a super-thrilling adventures that might make your tail fall off! Here is a journey to space, his friend OOK and his sister OOV and OOG=Geronimo stilton. When M.I.S.S.O finds that there is someone who is treating new mouse city by seeing a video message, they make a top secret mission to save New Mouse City. Is Geronimo stilton going to make it!