In a dimly lit dungeon, a bound novice is about to receive his first anal lesson from a stern mistress. She teases his hole with a vibrator, watching him squirm as pleasure and fear collide. She lubes up a thick dildo, pressing it against his virgin entrance. He tenses, but she slaps his ass, commanding him to relax. She pushes in slowly, letting him feel every inch. He gasps, his body adjusting to the new sensation. She fucks him gently at first, then harder, making him cry out. She adds a clit stimulator, sending him into a frenzy of pleasure and pain.