Because her husband only works and ignores the family, she secretly has an affair with secretary Oki. Seeking new stimulation, she cannot get out of her head the bondage he, who likes SM, trained her in. She had decided it would be the last time, but she offers her body to him again and he ties her up with hemp rope. The pain and suffering that squeeze her whole body turn into a new pleasure, and she drowns in that sweet agony.