On prize-giving day, a few dunces recall various incidents that marked their school year.

Jo Guardini, now the peaceful owner of a charming inn by the banks of the River Marne, once was a dreaded gangster. The respectful citizen does not want to have anything to do with the underworld any more. Unfortunately, two of his former accomplices kidnap a little girl and decide to hide her in his hotel. What will Jo do : side with the law in the person of inspector Loriot or have a relapse in crime?

A Dakota plane is carrying a ton of gold bound for Brazzaville, but it is hijacked over the Camargue. On arrival, we find nails instead of gold!

1920, in a small village in Provence. Monsieur Pascal, a young schoolteacher, is faced with a lack of interest from his pupils. He decides to radically change the methods employed by his predecessor. He listens to the children, draws inspiration from their discoveries and takes them out into nature. The pupils will rediscover the pleasure of learning, and he will rediscover the pleasure of teaching. But some parents and notables don't take kindly to this little revolution.

A man is killed smuggling contraband through the Pyrenees Alps. He leaves behind a pregnant woman who must go on.