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.
as Chow Sing Sing
as Tso Tat Wah
as Miss Ho
as Teddy Big
as Scissor Legs
as Detective Wong
as Turtle Wong
as Mr. Lam Cho-Tung
as Ms. Leung
as Mr. Cheng
as Chemistry Teacher
as Johnny
as Siu Yiu
as Officer Wong
as Annie
as 黃小龜之祖母
as Student
