A fierce robber has plotted a major heist. But unfortunately, his plan was unintentionally foiled by two dispirited middle-aged best friends, and the stolen cash disappears. As a result, the trio has to run from the pursue of a policewoman, as well as engaging in a firearm in order to reclaim the stolen cash, putting their life on the line.
Hong Kong police agent Cheung (by Aaron Kwok) works undercover in Kang’s (by Sean Lau) drug cartel, while another undercover cop Au (by Louis Koo) successfully earns their trust in an incident, a brotherly-bond is built among the three. After the Police busts the syndicate in Hong Kong, Kang subsequently hides away in the Golden Triangle, by chance he receives a tip-off about the betrayal within his circle of trust…
Fan Kwok Sang's schizophrenic breakdown led to the accidental death of his wife Wai Ling, and he was committed to a psychiatric hospital three years ago. Now Fan is ready to be released, with Dr. Chow Ming Kit vouching for him even though his senior objects. However, Fan finds it hard to cope with his new life. Something bad happens to him and Chow becomes obsessed in trying to defend his patient, as well as save his own reputation.
Sunny is a naïve circus performer who dreams of inheriting his father's knife-throwing skills. However, his hostile colleagues continue to bully him, relegating him to a lowly clown. On a tour to Malaysia, Cheung and other performers discover a cave occupied by the Japanese army during World War II. Instead of finding treasure, the performers - including Sunny - are sprayed with a mysterious chemical that turns them into superhuman mutants...