Han Xiao, a police special agent, is working undercover in an underworld gang. When the gang's leader, Chopper, kidnaps a rich kid, he is surrounded by a special police team and the robbers, led by Chopper, are all killed. Han Xiao's escape from death arouses Wei's suspicion, and Wei brings Han Xiao in for severe torture. Han Xiao uses his acting skills and intelligence to play with Wei, trying to clear his suspicion and gain Wei's trust