In a dimly lit dungeon, a mistress trains her bi-sexual slave in the art of humiliation and pleasure. She orders him to slip into a lacy, revealing lingerie, his cock throbbing with anticipation. 'You will serve my needs, slut,' she purrs, running her fingers along his naked flesh. She forces him to perform degrading acts, his body responding eagerly to her commands. Finally, she allows him to touch himself, but only after he's begged for it, his voice laced with shame and arousal. As he strokes his cock, she watches, cold and dominant, until he's reduced to a quivering, grateful mess.