沈志强是中年装修公司老板，在大陆有妻名云，因想朝夕相见故申请她来港定居。可是他又怕云被人抢走，把她强留家中。云叫契妹红到家中陪伴，后来强准许红带云上街。红带云悉心装扮，偶遇朗，朗被吸引。回家后强见云装束忽然狂性大发，自此对云时粗暴时温柔。云经不起红游说到酒吧散心，再遇朗，逐渐与他搭上。云终不能忍受强的暴虐，决定与他分开，在混乱中把他杀死，带强的钱逃跑。原来红与朗是情侣，揶揄强的财富，使云陷于万劫不复之地。

Yin is a lonely woman whose husband Keung treats her as his sex slave; she wants to kill him but never has the courage. He is always traveling to Shenzhen for whoring and once raped her friend Hong. Hong's partner Long has thrown her out of their apartment. One night after karaoke, Long and Yin begin a sexual affair. Long decides to kill Keung. Hong and Yin share their tragic past with Yin confessing about her fling with Long.