An executive and a dowdy working-class woman, both unemployed, married and parents meet at a supermarket. They become friends but find it hard to accept that they may be in love with each other.

影片开始时，一对沉浸在爱河中的青年男女正翩翩起舞。女孩叫莉雅，是一名高中生。她的男友名叫科特，操着一种奇怪的口音，还拥有几辆汽车，他们最近才在法国南部相识就马上打得火热。暑假快要结束了，莉雅必须返回萨瓦尔山区的家，于是科特便经常去看她。与此同时，从地中海到萨瓦尔的沿线地区发生了数起盗窃、抢劫、强奸案和几桩匪夷所思的谋杀…