In May 1989, a mysterious case of corpse dissolution shocked Hong Kong. Beautiful stewardess Brenda (played by He En) was murdered and thrown into a strong acid pool for dissolution and decomposition. Soon, her ex-boyfriend Wang Deming (played by Wu Zhenyu) and his current cohabiting girlfriend Kitty Ruan (played by Liang Simin) were arrested by the police as suspects. A year later, Shirley (played by Ye Tong), a social worker who was troubled by her relationship, went in and out of the women's prison to provide psychological counseling to Kitty. At this time, Kitty's mood was extremely unstable and she committed suicide twice for Wang Deming. In order to help her regain her confidence in life, Shirley came to Stanley Prison to visit Wang Deming. After several meetings, Wang began to reveal his true feelings and the process of his relationship with Kitty, and Shirley also confided her love affairs to Wang. The two people with emotional trauma gradually became dependent on each other, and Shirley also began to run around and appeal for Wang Deming's innocence...