After his father leaves home for another woman, 16-year-old Martial has to move with his mother, Sabine, to a more modest apartment. Martial finds it difficult to fit in his new life. His mother offers to help him, but she only makes the situation worse. Martial then forms a bond with two twin sisters his own age, with whom he has a series of exciting and disturbing experiences.

In a time of war and disease, a young officer gallantly tries to help a young woman find her husband.

A young man joins a team of experimented door-to-door salesmen, who teach him how to sell an expensive encyclopedia to modest homes that have no use for it.