Anti-gang operation

A female college student falls mysteriously from a building. Cheng Rui (played by Zhou Yiwei), the deputy captain of the criminal investigation detachment who has just been transferred to the post, is assigned by deputy director Du Yulin (played by Wang Jinsong) to trace the hidden story behind it. It is found that the case is related to gangster crimes such as routine loans and violent debt collection. The city's entrepreneur An Yiming (played by Eric Tsang) is listed as a key investigation target. Cheng Rui wants to investigate further but is asked to close the case as soon as possible. Who is acting as the "protective umbrella"? The city is surrounded by crises, and An Yiming's wife Zhou Tong (played by Qin Hailu) and economics professor Zhao Xianyu (played by Zhang Zhilin) ​​are involved in them. In order to restore the peace of the people, Cheng Rui and his colleagues break through the difficulties and track them down to the end, but they do not expect that there is a bigger conspiracy behind it. What is the truth? Can they wipe out the evil hidden in the darkness?