This film would like to pay high respect to Cui Daozhi, winner of the July 1st Medal, first-class hero model in the national public security system, Wu Guoqing, a first-class hero model in the national public security system, the most beautiful striver, criminal investigation expert, and the vast number of criminal investigation policemen working on the front line at the grassroots level.
In the early 1990s, Qin Chuan (played by Yu Hewei), who graduated from the police academy, and his friends Ye Maosheng (played by Li Tai) and Li Wen (played by Huang Man) returned to their hometown with the dream of being criminal police officers and became ordinary police station policemen. By chance, Qin Chuan subdued the gangster who was about to cause an explosion with his bare hands, thus starting his career as a criminal police officer.
After the heroic sacrifices of his master Gao Jianshe (played by Wang Ning) and his friend Ye Maosheng, Qin Chuan became more determined to defend justice. He has participated in the detection of many serious cases and gradually grown into an outstanding representative of the criminal investigation team. Cao Zhongshu (played by Bai Fan), a criminal technical expert specially invited by the provincial department, was impressed by Qin Chuan's talent. Wu Yingde (played by Ding Yongdai), the chief criminal investigation expert, accepted Qinchuan as his apprentice after rigorous inspection.
Since then, during his 35-year career as a criminal police officer, Qin Chuan has worked together with three generations of old, middle-aged and young criminal policemen including Wu Yingde, Cao Zhongshu, Tao Weizhi (played by Fu Dalong), Li Wen, and Zhao Fei (played by Zhao Yang). They have successively overcome many difficult and backlogged cases and promoted the passing of the criminal investigation career.
