Having a sister is really not easy. Gus and Léo are too often scolded for Zoe's stupidities. They, therefore, decide to take refuge in their secret hut to be able to play quietly ... But the little plague manages to prevent them. It's decided, the two brothers will use the great means: the magician Magix can transform everything ... even the little sisters! But when the magician turns Zoe into a mouse, it's panic!
