The Old Case's Hidden Truth

At the turn of the millennium, teenagers Wu Jinbiao, Cao Minghao, and Mai Xingfan fall into delinquency together. They gradually turn to crime, planning robberies, and accidentally kill wealthy businessman Chen Da during a home invasion on a rainy night. Exploiting loopholes in the household registration system, they change their names, launder the stolen money, and scatter into hiding for twenty years. Three innocent teenagers, Lan Zhence, Dai Yongchao, and Zhang Xiangchong, are hastily convicted and suffer years of wrongful imprisonment. Years later, veteran detective Wan Youwei remains steadfast in his pursuit. Taking advantage of a campaign to clear cold cases and breakthroughs in forensic technology, he identifies the real killer using a fragment of a belt. Police in three locations coordinate to make the arrests. After the suspects are caught, they turn on one another and reveal their crimes, leaving the evidence beyond doubt. In the end, the three ringleaders receive lengthy sentences, and the wrongfully convicted are exonerated, proving that no one can escape the law and justice will never be absent.