A father who had been estranged from his son allows him and his new wife, Ryo, to move in. He constantly criticizes Ryo until she finally reaches her limit and calls him into a dark room. There, he discovers that his daughter-in-law is actually the legendary Dominatrix from the SM club he has frequented for years! Calling him 'Baldy Baby,' she begins her expert training on her own father-in-law.