Chan Wing Yan, a policeman, successfully infiltrates a gang while Wong Chi-Shing, a tried member, becomes a mole in the police force. However, things change when both of them must seek each ... Read allChan Wing Yan, a policeman, successfully infiltrates a gang while Wong Chi-Shing, a tried member, becomes a mole in the police force. However, things change when both of them must seek each other out.Chan Wing Yan, a policeman, successfully infiltrates a gang while Wong Chi-Shing, a tried member, becomes a mole in the police force. However, things change when both of them must seek each other out.