Spirou, Spip, Fantasio and the count of Champignac must each bring back two good-luck charms from the mountain top. to do this they have to make two round trips through the unpredictable Giant Mushrooms Valley. Each player takes charge of a character who has special abilities. Upon his turn he must change a mushroom's size and move, or the opposite. But of course, the other characters do their best to hinder him. A game based upon a famous Belgian cartoon character: Spirou.