Deserted by CHING as well as LEUNG and CHUNG, PO takes to drinking. PUI sympathizes with him and offer him much comfort and consolation. This arouses much jealousy on the part of KWAN. KWAN ferrets out MING's real identity. However, he does not disclose to the others that MING is a secret agent. At the back of his mind, KWAN is plotting to get rid of PO making use of MING. KWAN supplies MING with information concerning PO's drug trade. When the two gangs meet, they are surrounded by the police who wait in ambush. The police and the gangsters exchange fire. TIN's son is killed while MING's life. is at risk. However, MING is saved by PO who is then seriously wounded. Feeling much indebted to PO, MING saves PO from the hands of the police and takes good care of him.