When he agreed to lead a singing class in a women's detention center, Luc, an opera singer, did not expect to face such a difficult task. Despite reluctances and the rising tensions inside the prison and between inmates, he manages for the group to find its rhythm. Carole, Jeanine, Noor, Jess, Marzena, and Catherine gradually let themselves be tamed by music and taste a semblance of freedom.
