The head of a school in a little French country town encourages the playful romances between his young students, as well as a love of jazz music.

Suspected of murder, a man disappears under mysterious conditions, which only increases the charges against him.

Foppish Sir Percy Blakeney, who secretly leads a double life as the daring rescuer of French aristocrats from the guillotine during the French Revolution, fights to save his brother-in-law while his wife is manipulated by the villainous Chauvelin into helping capture him, unaware of her husband's true identity.

During the Second World War, in occupied Paris, a group of high school students is more active at selling cigarettes and silk stockings than at studying. But the day a new philosophy teacher takes charge of their class, things begin to change. It must be said that Mademoiselle Bravard is not only a gifted educator but a charming young woman as well. Thanks to her, all the students end up passing their finals.

Bob, a student, is very emotionally close to his mother Suzanne. He is alarmed when she seems about to begin a relationship with a novelist, regarding it as a betrayal.