After the birthday party of his wife Odile, Louis accompanies a friend to the station. When the train leaves he starts reminiscing about his youth.

A woman tries to come to terms with the death of her son, who was killed by a hospital error.

After the death of his parents, Pierre is forced to care for his younger sister Nathalie by committing petty crimes. In a recurring motif of Gérard Blain’s cinema, Pierre is taken under the wing of an older gay man, Hubert , who offers him work and financial security; but when Hubert makes advances to him, Pierre robs him and takes up with a group of radical leftists who are planning terrorist attacks. Without employment, Pierre loses Nathalie to child services and spirals into desperation, finally erupting in an act of horrific violence. An x-ray showing the largely undiagnosed sickness of its time, and a stern warning to ours.

A couple takes on a homeless teenager. The trio forms a family-like community that seems to work extremely informally and without many regulations. But then the harmonic situation escalates as the boy falls in love with his "adoptive mother".

A homeless young man, living in his delivery truck, is simultaneously adopted by a pranksome group of youngsters and made into a police informer. Believing that he is doing something good both for the other kids and for himself, he has no qualms.