Lucie makes her living selling bathing costumes on the beach at Marseilles. She would like that her ten-year long boyfriend, Lucien, becomes her best friend. But this requires truth. For Lucien, newly made secret agent who has to play a young idler, it is mission impossible. Even more so when a young american beauty will ask him to initiate her into sensual pleasures.

Following a fight that goes wrong, Tigre, Chalouf, and Sainte-Croix, all three students at a vocational high school in Marseille, decide to leave everything behind. "Freedom, freedom, I write your name," they don't know Eluard, but they heard the poem in class and the word freedom touched them. They steal a BMW, a classic move, set off on an adventure, talk a lot and get into a few fights. Chalouf, the tender one, loves Marie, a girl he met by chance in the Old Port. Marie lives in Briançon. No matter! Off they go to Briançon...