A student from an elementary school accidentally breaks the glass roof of his school. His comrades decide to support it by working during the summer holidays in order to pay for reconstruction.

It's a sailors' story; they often sail away and when they return, the first thing they do is searching girls in the harbor. One of them -Jean- is shy and he does not know how to go with women. One day, he meets Yvonne and falls in love with her. But, alas, she prefers his good friend René. Another suitor, Pierre, owns the "À la Belle frégate" a café where Yvonne works as a waitress. Madam(e )Juliette, pretends she helps Yvonne and tries to make her an "entraineuse"(hostess) for less-than -handsome guests. But the girl knows better and will choose one of her suitors.

A person who had usurped the identity of a famous writer of detective stories was killed in the train. Why and by whom?

A child is rejected by his father and sister when his mother dies giving birth to him. The family is falling apart; the father takes to drinking, the child is placed with a nurse. However, the little girl will take the initiative to bring the child back to the family home which she decides to take care of, thus encouraging the father to change his behavior.