During her first day at a new school, Tia meets LÔeo, a student with a rather exuberant style. When they both meet in the philately room, they quickly become friends. They then notice that the school janitor has strange behavior. By following him closely, Tia and LÔeo discover a mustachioed monster straight from space who plans to take control of their school. The two friends will have to show courage and intelligence to thwart the plans of the alien creature and send it back to its native planet before it seizes Earth!