In the town of Thiers, summer of 1976, teachers and parents give their children skills, love, and attention. A teacher has his first child, a single mother hopes to meet Mr. Right, another mom reaches out to Patrick, a motherless lad who is just discovering the opposite sex. Patrick befriends Julien, a new student who lives in poverty with his mother and has a terrible secret. Bruno shows his friends how to chat up girls. Sylvie stages a witty protest against her parents. Brothers give a friend a haircut. A toddler falls from a window and is unhurt. Everybody goes to the cinema. At camp, Martine catches Patrick's eye. A teacher explains: "Life is hard, but it's wonderful.。有感于眼下一代年轻人不求上进、没有责任感,有资本家与数位专家决定展开一个实验,看能否用爱情激发年青人的进取之心。牛仔裤店员吴晓辉堪称是无追求青年的代表,他整日和一班朋友勾女,毫无上进心,于是成为了实验对象,而担任“爱情机器”给予吴晓辉爱情体验的则是大学助教JoJo。经由一次状况百出、经过安排的“英雄救美”事件,吴晓辉进入了JoJo的爱情剧本,而后者身处大学的职业亦激发了吴晓辉的自卑感,从而埋头苦修日语,期盼能够与JoJo般配。入戏太深的吴晓辉在爱情中无法自拔,当他知晓事情真相后决定义无返顾的追求爱情……。