In a secret corner of the house, a rebellious sister finds solace in silicone. She slips her hand into her bra, caressing her firm mounds as she bites her lip. Her other hand works a vibrator, pressing it against her clit through her panties. She imagines her lover's touch, her body arching as the toy hums against her. Just as she's about to reach her peak, a creaking floorboard alerts her to an unexpected visitor.