Beatrice, in her fifties, is a physical education teacher at a high school. Disappointed by the lack of boys in the dance class she teaches, she tries to convince one of her students, Krimo, whom she has recognized as having potential, to join. But Krimo is not easily persuaded, and when Béatrice, tired of hearing his constant "go f*ck your mother" comments, suggests in the middle of class that he go "f*ck his father" for a change, things escalate...