In the dimly lit dungeon, a bound male slave, chastity device securely fastened, awaits his mistress. She enters, heels clicking on the cold stone floor, a sadistic smile playing on her lips. "Today, we test your control," she purrs, her gloved hands caressing his straining cock through the metal cage. She orders him to stroke himself, his hand moving tentatively over his confined member. His moans grow louder, his body tensing as she watches, enjoying his struggle. "Not yet," she commands, pushing his hand away just as he's about to climax. His face contorts in frustration, but he knows better than to disobey. She repeats this torment, bringing him to the brink then denying him, over and over, until he's a sobbing, begging mess.