Lucien, hijo de un conserje de un edificio burgués, se prepara para una escuela politécnica. Sus compañeros de escuela secundaria son mediocres, y su madre teme que fracasará. Sirve como excusa para las coqueterías de otros chicos en su banda.
Martine is a young woman plagued both by poverty and by uncaring, problem parents who in no way can provide the kind of nurturing that Martine needs during her adolescent years. As a result of her family situation, Martine runs away from home and gets involved with a group of teens and young adults from the wrong side of the moral tracks.
