The life and dreams of the little rats of the Paris Opera dance school! Summary: At the School, the students prepare an extraordinary event: they will dance in public at the Musée d'Orsay! In honor of the painter Edgar Degas, the little rats will present an exercise at the bar. Maïna, Constance, Zoé, Sofia, Colas and Bilal are delighted to dance in this unique setting. But their pleasure is disturbed by a series of disappearances of valuables at the boarding school. Students begin to wonder: is there a thief among them?