Chow Sing Sing is about to be kicked out of the Royal Hong Kong Police's elite Special Duties Unit. But a senior officer decides to give him one last chance: Star must go undercover as a student at the Edinburgh High School in Hong Kong to recover the senior officer's missing revolver.

Stephen Chowas Chow Sing Sing
Richard Ng Man-Tatas Tso Tat Wah
Sharla Cheung Manas Miss Ho
Roy Cheung Yiu-Yeungas Teddy Big
Barry Wong Ping-Yiuas Scissor Legs
Karel Wong Chi-Yeungas Detective Wong
Gabriel Wong Yat-Shanas Turtle Wong
Paul Chun Puias Mr. Lam Cho-Tung
Kingdom Yuen King-Tanas Ms. Leung
Dennis Chan Kwok-Sanas Mr. Cheng
Cheng Siu-Keung