The son-in-law develops abnormal feelings toward his wife's mother. Under the table, he presses his leg against his stepmother's, and she intertwines her legs with his without resistance while continuing their conversation. Watching her glance nervously to ensure her husband isn't waking up, the son-in-law grows increasingly aroused and begins touching her thigh. Slowly, his fingers creep toward her crotch. Though the stepmother starts to show slight resistance, the taboo thrill of her husband sleeping right beside them excites them both, intensifying their passion further.