Fong Tin Mow is a never-do-well troublemaker who has inherited his father's arrogant personality perfectly. Fed up with his mean demeanor, Fong's fiance Yau Siu Ching comes up with a clever way to tame him--she will only marry Fong Tin Mow if he promises to be the best police officer in town. To prove he is capable of change, Fong Tin Mow dutifully joins the cadet school. A series of strange and wild adventures await Fong Tin Mow as he attempts to become Mr.Winner.