In the 1930s, in Shanghai, Yan Dahai, a cowardly Qinglong Gang member, found himself suffering from a terminal illness and became a policeman by mistake. In order to earn money to redeem his dream goddess, the Feilemen dancer Du Qing, he planned to die in the line of duty in the remaining time of his life so that he could get the pension to save the goddess. However, while he was frantically carrying out the task of eradicating "gangsters" and "drug lords" and prepared to die, he always failed to die and was promoted repeatedly. However, the glamorous Shanghai hides a greater crisis...