A microcosm of people lost in search of an artificial happiness, which leads them to steal and prostitute themselves for the short ecstasy of a squirt of heroin in the veins. Marco and Pina live in this world of drugs, prostitution and violence, and they must fight for their survival. One day one of their friend dies during a holdup. Marco and Pina are helpless and will do anything to escape, but fate does not want a similar world. Between bites of heroin and sidewalk they are in a deadly trance.

费德里科Federico(霍华德·罗斯饰)是一个变态的恶魔，专杀女孩，一直受到警方的通缉和追捕。一次，他受伤后逃到了12岁的西蒙娜Simona(卡琳·特伦泰佛尔饰)家附近并得到了西蒙娜的救护和照料。岂料，西蒙娜欲望高涨的母亲薇拉Vera（莉莎·加斯托尼饰）竟与这个外表英俊的男人有了恋情。对生活沮丧万分的薇拉后来计划让费德里科杀死她坐轮椅的丈夫（梅尔·费雷尔饰）。西蒙娜以身体诱惑费德里科，请求他不要采取这种行动……