Sunny (Aaron Kwok) 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 (Colin Chou) 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. Back in Hong Kong, Cheung and his gang wreak havoc on the city by pulling off a series of daring bank robberies. With the city gripped by fear, Sunny becomes the city's latest crime fighting hero with the help of opportunistic reporter Angel (Shu Qi) and two supernatural phenomenon experts from China (Wu Jing and Zhang Jingchu)..
Elenco: Aaron Kwok , Qi Shu , Jacky Wu , Jacob J Ziacan , Jingchu Zhang , Yuen Wah , Collin Chou , Elanne Kwong , Tie Nan , Karen Cheung Bo-Man , Mo-Chan Chik , Chrissie Chow , Gao Yan-Chao , So Ming-Hei , Ben Wong Chi-Yin , Gary Chiu Cheun-Sing , Terence Yin , Chrissie Chau .