In the dark corners of the bustling city, there are two heroic undercover police officers-Zhang Yi and Chen Yu. Zhang Yi was originally a child of a family in the martial arts force. He was very athletic and intelligent. After witnessing his relatives being persecuted by a criminal group, he joined the police force with a heart for revenge and justice and became an undercover agent. Chen Yue is a top student at the police academy, proficient in various high-tech methods and criminal psychology, and took the initiative to apply to become an undercover agent in order to fight crime. They hid in the market, met by chance, and gradually became tacit comrades-in-arms. Faced with the crimes of the new era and the darker crimes, the two lurked in the hearts of criminals, waiting for opportunities...
