Three girls, each about 15, deal with puberty, the onset of sexual attraction--and, for two, the pressure of virginity. Marie, who's slight and diffident, quiet and nearly expressionless, is friends with Anne, who's a bit chunky and impulsive and has decided that François will be her first love. Watching synchronized swimming, Marie is suddenly attracted to team captain Floriane--beautiful, aloof, tall, and rumored to be a slut. François pursues her and Marie begins to hang around her; they trade favors, and an odd friendship forms. Each experiences her own "first", and Marie must sort out attraction and friendship.