Star Chow 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.
- Genre: Action, Comedy
- Studio: 永盛電影公司, 三和電影製作, Win's Movie Productions, Samico Films Production Co., Ltd.
- Keyword: high school, undercover cop, sdu
- Cast: Stephen Chow Sing-Chi, Sharla Cheung, Ng Man-tat, Gabriel Wong, Roy Cheung, Karel Wong Chi-Yeung