"Discovering her dominant side, a fed-up teen turns her boyfriend's world upside down. She introduces him to male chastity, keeping him locked and teased. One evening, she decides it's time for a new adventure - black fisting. She commands him to strip and present himself, admiring his bound cock before lubing up her hand. With a hungry glint in her eye, she slowly pushes her fist into his tight, untouched ass, stretching him wide. He gasps, writhing in a mix of pain and pleasure as she fists him rough, bringing him to the edge of ecstasy."