Seizing the opportunity while her husband was away on a business trip, Nanako commits adultery. However, her father-in-law, Yoshiro, finds out and becomes enraged like a blazing fire. Unable to calm his anger, Yoshiro ties up Nanako with ropes and punishes her... Meanwhile, her brother-in-law, who had been watching from the shadows, is aroused by the sight of his beautiful sister-in-law and ravages her helpless body. This was the beginning of punishment in the name of tight-binding erotic torture…
