CID Deputy Lei Zhenying (Ren Dahua) witnessed a case in which a prostitute was abused and seriously injured by chance. It turned out that a huge prostitution ring was involved. When Lei embarked on an investigation into a congressman suspected of soliciting prostitutes, he inadvertently caused a long-planned ICAC operation to fail. Chiang Wei-ki (Zhang Fengyi), Director of Operations of the ICAC, angrily complained and refused to allow the police to get involved in the case again. Lei was indignant and continued to pursue the investigation into the prostitution ring. Chiang actually colluded with the prostitution ring. In order to cover up the matter, he decided to set up a trap to frame Lei to collect the benefits of the prostitution ring; Chiang even sent his men to investigate...