Episode 4

CHUNG is transferred to another unit. He orders MAN, MAK and CHI to follow BING. BING does not discover them. CHUNG wants to transfer his brother-in-law, KWONG, to his unit. He even asks KWONG to pass part of his salary to his father-in-law for family expenses. BING leads three more people to rob a jewellery shop. KWONG devises to scare BING away. CID brings KWONG back to the police station to investigate. CHUNG goes bail for KWONG. KWONG again follows BING. KWONG finds that there are posters and his photo on the wall. It is the loan-shark's good deed. KWONG tears off the posters but he lost BING's trace. Consequently, the CID gets nothing. BING escapes from the disaster.