Young student Claudine has a dream in which the Roman student Cornelius, fascinated by the beautiful wife of the commander, attends lectures on the art of love of great Ovid. Ancient tragedy repeats itself in a few centuries ...

The story centers around a graduating class of "less-gifted" students in a private Versailles high school. Only a miracle has brought the students this far along, and after a practical joke misfires and the whole school is dynamited, the students are in deep trouble. They have to present themselves in court for their punishment and it could not be worse: If they don't pass their high-school graduation exams, they go to prison!

Marie (Annie Girardot) teaches high school and has a 16-year-old daughter in her class. Divorced some years previously, she has some vague egalitarian notions about friendship with her students and leaves her door open to them. One of her protégés is found beaten up just outside her door, and an emergency physician comes by to treat her. When her daughter starts seeing someone she doesn't much like, and she begins having a brief affair (her first since the divorce) with the ER doctor, she begins to reconsider her policy.