A couple going through a rough patch, Iro Narumiya (41) and her husband. The husband, believing his wife has an M kink, seeks out a bondage master to break the monotony. The wife agrees, and in front of her husband, she undergoes tight bondage and training. In front of her husband's eyes, she is lewdly bound and trained, experiencing intense stimulation while bound, her husband watching as she experiences pleasure for the first time, becoming aroused. The husband also becomes aroused as he watches his wife being violated in front of him. The bondage training continues, and the wife is driven wild by the whip, led to pleasure by another man's penis.