In a dimly lit dungeon, a stern mistress commands her new slave to his knees. She grasps his balls roughly, feeling their weight and warmth. With skillful fingers, she squeezes and pulls, pushing him to his limits. She demands he thank her for the 'attention', his voice strained with both pain and pleasure. She grinds her heel into his balls, making him gasp, yet he remains obedient, hungry for more. The mistress, pleased with his progress, intensifies the session, leaving him a whimpering, grateful mess.