Chicken did not return for this film and Chan Ho Nam is on his own. He finds a beautiful new love interest's (Shu Qi) and has to deal with some young "Tung Sing" triad members trying to make something of themselves. Young and Dangerous 5 happens during the transfer of Hong Kong sovereignty to China. We see a transition of the "boys" becoming "men" as they develop maturity and go into more business-like dealings.

The story describes the Eastern Star, Causeway Bay, a Szeto Ho Nam, intent with the status of the Chan Ho-nam compete Causeway Bay jabi it during Ma Nadu Chen Jia Nan deceive Chan Ho Nam intention to cooperate with him and then abusing him then turn with Szeto Ho Nam, Chan Ho Nam a pedestrian quite angry. An Uncle Seven next to the woman lying fine, Chan Ho Nam to her many feelings, but that she was considerable indignation when to do things to help Chen Jia Nan. Shu Qi determination to help Chan Ho Nam expose Chen Jia Nan embarrassments while the original replacement for Big Brother prison Big Head Young Tim was released from prison he thought of the dull life as a selling newspapers at a street vendor but it is often the Eastern Star strong protection fees Chan Ho Nam secretly help him he was rather reluctant to talk to former gangster related.

Brother of the original Mr. Chiang, he lives out in Kuala Lumpur (national capital of Malaysia). He appears series several times after his appearance in fourth movie.

But in the end, after all to come back to help Chan Ho Nam and on behalf of Hong Xing to fight a boxing match with the Eastern Star and Szeto Ho Nam privately resolution than a private game with Chan Ho Nam, who lost have disappeared in Causeway Bay. The final bulk of winning boxing matches and Chan Ho Nam also defeated Szeto Ho Nam declaring only a "Ho Nam" and the movie ends it setting off the events of the first four films of Young and Dangerous.