Somewhere in the early Ming Dynasty, the Pope of Happy Religion is a lustful monster, who can assume male or female form at will (the female form is Pauline Chan in a white wig). His/her forces fly around and attack Dr Yue and his family, including his daughter Bao, who has her back invisibly tattooed. The village chief (Ho Ka Kui, under a heavy beard) bravely fights to the death. Sixteen years pass. Chao Chuen is a poor scholar carrying his overweight mother around in a backpack. (Where he finds the strength to do this is never explained). Mum has an eye disease, and Chuen is seeking a legendary doctor to find the cure. Chuen encounters the Pope's chief assistant, who is playing a zither, and tries to distract him, but is thwarted by two tramps to whom he previously gave water. As a man, the Pope practices what he preaches, and has a cackling great time.