Fung was ordered to be an undercover immediately after he was released from the police academy. He entered a triad gang headed by Ah Ting, and became friends with him. However, the time came when Fung was forced to arrest Ah Ting. Ah Ting, however, forgave Fung and asked him to take care of his girlfriend Ah Lan, which he does. 8 years later, Ah Ting is released from prison and promises Ah Lan that he will no longer join or head a gang because Ah Lan has never liked that life. However, Ah Ting's greed and temper lead him to head down the wrong path again, and upon finding out, Ah Lan decides to leave him.
