Hong Kong Phooey is supposedly a master of kung fu and other martial arts. The stories begin at the police headquarters, where Hong Kong Phooey's alter ego, Penry, works as a mild-mannered janitor. He works with Sergeant Flint (Sarge) and Rosemary, the telephone operator, who has a major crush on Hong Kong Phooey. After Rosemary gets a call and explains the criminals' crime Penry would run into a filing cabinet to transform himself into Hong Kong Phooey.