In a certain county, Zhang Hao and Wu Erwo took risks because of Coca-Cola's high surgery fee, and armed themselves to rob a gold store. Just when the two brothers hesitated, another group of robbers took the lead and robbed the cash transport truck passing by the gold store. In the chaos, the robbers mistook Zhang Hao and Zhang Hao for their accomplices and threw a bag of priceless diamonds to them. He accidentally got involved in a real diamond robbery.

A man's body was found in the wetland beside Erlong Lake in Siping City. The police launched a full investigation. Suddenly, a night-shift taxi driver Yang Dawei surrendered to the police headquarters. Night before Dawei meet classmate, drunk as a lord that resulting in an accidental collision on the way. But it was only first step that led to another vicious criminal case

In 1995, in the city of Jixiong in northeastern China, two robbers wearing burlap sack masks killed many people and committed a robbery. Everyone at the scene was killed. The cruelty of the crime left the entire city in shock. The police station director ordered the criminal police captain, Zhang Jian, to investigate the case. Jiang Hongbing, who had retired from the martial arts world for many years, decided to team up with Captain Zhang Jian to avenge his fallen comrade. As a result of the killer's meticulousness, what difficulties will they face in tracking down the case, and how will they uncover the clues to solve it?