An adolescent comes of age during a summer in the Rhône valley with his maternal grandparents. Jules seems a little too close to his mother and distant from his father, who wants Jules out of their Parisian house. It's to be a summer of transition, perhaps to a boarding school, and during these weeks in the country, Jules fishes with his grandfather; proves himself to the local youths, a group led by the bullying Red; takes on some tough guys; feels rejected by his mother; and, meets and pursues Evelyne, the village beauty. She's responsive, and Jules doesn't exactly know what to do next. Then, something happens that propels Jules into decisiveness and maturity.

17 year old Mic feels constrained in a world which is not his own: a lower middleclass suburb of Marseilles, conformism... His being different drives him into a loneliness to which rockmusic not only brings tranquillity and comfort but flings him into the adventure of discovering himself.