The stepfather, who is a sadist, instigates his daughter-in-law's secret masochistic tendencies, leading to masked rape. As expected, her sensual and masochistic body responds. The stepfather begins his sadistic training. Ropes bite into her fair, voluptuous body. A thick, meaty rod is thrust deep into her throat. The deliveryman, finding her bound and left alone, also commits as he pleases, transforming her into a complete meat toy. Continuous climax under tight bondage! Slapping her big buttocks! Given pleasure permanently, she goes insane.