Busty married woman Miku books an in-home massage expecting a woman, but an older man arrives instead. Though unsettled, she is won over by his polite manner and confident sales pitch and decides not to cancel. The therapist, Shinji, is actually a depraved predator who uses highly addictive aphrodisiacs while searching for women to enslave. He smears the thick drug over her huge breasts, drawing her into escalating pleasure until she craves his visits and begs him to creampie her day after day.