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.。大聪是一个看起来很不靠谱的地陪导游,一天接待了年轻貌美的青年女画家童彤。童彤按照男友天明邮寄来的日记信息来到西双版纳。日记中男友告诉她,两人要在西双版纳玩一次互不见面的爱情追逐游戏,童彤如果按照日记里的计划,顺利完成了这次游戏,就可以将二人的爱情修成正果。大聪开始以为这不过是男女恋人之间的玩笑而已,谁成想童彤玩的格外认真,一路上二人按图索骥,历尽艰辛,又乌龙不断,一步步完成了礼堂寻画、医院惊魂、酒店探秘、咖啡馆寻亲等一系列任务后,终于来到了日记里任务的终点,却发现天明已经深埋墓地之下。童彤伤心欲绝,悲愤求死,幸好大聪及时相救。结合天明的日记与自己的亲身经历,童彤和大聪都重新参悟出生命的真义。。