Anne is large, awkward and childish, Floriane good-looking, flirtatious and outwardly confident and Marie, the one we follow, quiet, watchful, small and pretty. These three 15-year-old French girls hang out, talk about boys and sex, feel insecure, go to a swimming pool, where they practice synchronised swimming, meet boys and each other, flirt, fall in love and gradually grow up. A sensitive, fascinating and provocative view of female teenagedom.