During the Republic of China, Yao Qi was a dandy. His childhood dream was to be a policeman. He discussed becoming a policeman with his father Yao Chang, but Yao Chang disagreed. Yao Chang was a business tycoon, so Yao Chang asked him to take care of the business together. Yao Qi begged his father to agree to his request. Yao Chang asked Yao Qi to work as a police officer in the police station for two years and come back to do business with him. Yao Qi agreed. Yao Chang paid someone to let Yao Qi become a police officer.
Yao Qi had both sides, and soon became a detective.
Several murder cases occurred, but he could not solve the case. He realized that being a policeman was not fun, so he put aside his young master's temper and reused Jiang Hao to solve the case. Jiang Hao has great detective skills, but Jiang Hao is taciturn, not good at socializing and pleasing his superiors, and his superiors do not reuse him. These are exactly what Yao Qishan is good at. They learned from each other's strengths and complemented each other's weaknesses. Jiang Hao found out that the murder scene was not a robbery and murder, but an illusion deliberately arranged by the murderer. It was actually a murder. Jiang Hao judged that the murderer behind the scenes was a big shot, and Yao Qi wanted to catch this big shot. Jiang Hao advised Yao Qi to stop it and not to pursue the case any further and capture a few minions as scapegoats. But Yao Qi was unwilling to give in. The murderer was very arrogant. He wanted to catch the murderer, but he was afraid that the murderer would not be offended. He was in a dilemma...