The new police commissioner reports his duty and finds Lee Rock is actually the most powerful person in the entire police force. He promotes Lee to the rank of inspector. Lee realizes this promotion is actually the maneuver of his surrender of power. Subsequently, ICAC is formed, Lee decides it is the right time to resign. Lee's son, Yin, has graduated and joins the ICAC. He has strong hatred towards his father and determine to put his dad behind bars for the enormous evil sum Lee gathered.