Arnaud and Guillaume are in their last year of high school. Summer is approaching and like any teenager, they're thinking about cigarettes, alcohol and sex. But boys or girls? Future looks so blurry when you're a teenager!

Ariane is convinced that her boyfriend, Jean-Jacques, is having fantasies about another woman, Élisabeth. In an attempt to save their relationship, Ariane encourages Jean-Jacques to pursue Élisabeth, believing that this is the best way to free him from his own desires. Jean-Jacques presents himself at Élisabeth's house, not realising that she is the daughter of the French President.

Anne doesn't have enough money to take her daughter, Mélody, away from the small provincial town where they live for a few days during the summer holidays. In the face of her daughter's disappointment and incomprehension, she does all she can to find the money.

In Paris, the emotional and professional tribulations of a musician and his roommate. Freshly installed in Paris, David, a shy and clumsy musician, falls madly in love with his student, Julia. He tries everything to seduce her. His roommate, Anne, encourages, advises, and consoles... passionately!

Fleur, a shy young Parisian in Marseilles, meets Vénus, a flamboyant but lost Russian girl. They have nothing in common, save for their wish to meet the ideal boy.

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.