SIN leads FUNG to meet her customer in a hotel. FAN follows them. However FAN loses their trail at a road junction. Luckily he finds the hairpin left by FUNG intentionally. FAN saves her just in time. At last the gang of prostitutes is broken up. FAN is urged by his supervisor to collect evidences so as to accuse LUNG. NGAN secretly informs LUNG before FAN takes action. FAN`s efforts are fruitless. FAN wants to invite FUNG to be his partner in the police annual dinner. However PAUL takes a faster step and he has to go alone.