A family guy cop (Melvin Wong) goes deep into a case and gets involved with a deranged killer. His partner and friend (Philip Chan) along with a new protégé Porky (Pat Ha) take over the case and look for his missing partner (who's "enjoying" the twisted company of the killer. Can Inspector Chan and Porky find Melvin before he becomes the latest victim of the psychotic killer?
After losing their lottery winnings during the bank's closure, the Biu family's luck changes again as Bill's job promotion and daughters' education and work careers sent them and the entire family to lead their new lives in Canada, where new misadventures await.