The movie is the third installment of the "I Am a Police Officer" series, which revolves around a sudden homicide case. It tells the story of Yang Dong, the deputy director of the Mingde Public Security Bureau, leading the entire police force to conduct an in-depth investigation into the case of being bitten to death, and uncovering the story of entrepreneur Lin Feng leading the wayThe story of the Peak Group's crimes such as killing people, lending at high interest rates, and opening casinos to seize huge profits, after intense struggles, ultimately bringing this dominant black forces to justice.