This story tells a story of how the net of heaven is vast and nothing can escape it, and how evil cannot prevail over good. Inspector Ding, the chief of the police station, and Feng Datou, a local wealthy businessman, colluded with foreigners and traitors to resell opium for their own selfishness. In order to find the legendary treasure, they did not hesitate to sacrifice the lives of the innocent Sun and Zhou families, and they completely ignored the danger of the country. Female inspector Huo Qing came to Pujiang Town with her right-hand assistant Yan'er. Although she had many misunderstandings with Xing Yi, the deputy director of the police station, they were fortunately cleared up in time. The three of them joined hands to crack the Sun and Zhou family extermination case, exposing the treasonous crimes of Inspector Ding and Feng Datou. The truth of all the cases was revealed, the bad guys were punished as they should be, and Pujiang Town returned to its former tranquility.