Emma discovers her sister Hélène naked and with her there is a boy (boyfriend?). The boy, not caring about Emma, begins to kiss and caress Hélène's breasts, only to be chased away. Emma seems annoyed and embarrassed and doesn't want to hear explanations.
Boys frolic in the locker room. One of them is nude but covers his privates with his hands. Girls enter boys locker room to give some boy his [lost?] trousers.