The Sentence. Twenty years ago, in city S, Xu Minliang was sentenced to death for rapes and murders of women, after which he scattered their dismembered bodies around the city. All the evidence was against him.
The Mistake. However, police captain Du Cheng and Ji Qianqiong, the husband of one of the victims, are convinced that the investigation was wrong: an innocent man was executed. After retiring, Du Cheng decides to find out who is truly guilty for these crimes.
Cooperation. In the search for the truth, Du Cheng comes to a nursing home where Ji Qianqiong lives—he is also determined to find the murderer of his wife. He conducts his own investigation. The men realize that in order to solve the mystery, they must combine their efforts.
But Du Cheng is seriously ill, and Ji Qianqiong’s health also leaves much to be desired…