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.

The heir to a noble and influential family finds the love of his life, but she will only accept him if he becomes a kung-fu master. He becomes a legendary folk hero who tries to save the emperor.