Introduction: A rookie policeman, Mu Tian, ​​was brutally beaten by a wealthy father-in-law before his first mission to round up drug lords. Being ignorant, he was knocked off a cliff during his actions and died on the spot. However, he accidentally passed through a poor son of the Republic of China. The old man sought revenge and was killed by him. He had to flee to Shanghai. He is the long-lost son of Qiao Shikuan, a department store tycoon in Shanghai. But he doesn't want to inherit the family business. He just wants to be a detective. In Shanghai Bund, which has been reduced to an isolated island, where various forces are wrestling with each other, how does he sublimate his 45-degree life in the midst of introversion and lying flat?