A group of friends are planning how to spend their summer vacation. One plans to go to the Seychelles with his American girlfriend. At the airport she dumps him for another guy. He has no money so he steals a backpack and goes camping. Somehow he meets a pretty girl and convinces her to share his tent. But a famous singer sees the girl and wants her too. He convinces the luckless guy to act like a fool and the girl leaves him and goes with the singer to the French Rivera.

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!