A stark and intimate portrait of a woman against all odds, marginalised by society and trying to find a way to survive in a world where motherhood, misogyny, crime, and independence meet. Faced with societal scorn and her own moral conflict, she navigates a perilous path, determined to shield her child from chaos. In her struggle for survival, bonds of love and loyalty are test...。港生(王祖贤 饰)从大陆偷渡至香港,一路颠簸还被蛇头欺辱,搏斗过程中将蛇头打伤才逃脱出来,但外面的世界同样令她感到陌生惶恐。她起初预备投靠自己的姨妈,却遭到姨妈拒绝且冷言讽刺港生,而姨父则垂涎其美色,港生只得离开姨妈家再次流落街头。督查何定邦(周润发 饰)和祥仁(吕方 饰)追捕白粉雄,白粉雄驾车冲出街道撞倒了路边的港生。港生在医院苏醒以后害怕身份败露被送回大陆,灵机一动谎称自己脑部受伤得了失忆症,还“认准”何定邦就是其丈夫伟雄。心性善良的定邦只得将港生接回家中暂住,二人关系日渐改变,但港生“偷渡客”的身份却像两人关系中的定时炸弹时时刻刻存在着……。