The masked Mistress, a mature beauty, takes her male slave through a punishing session of CBT and ball-busting. She ties him to a chair, his balls exposed and vulnerable. She runs her fingers over them, making him flinch, then grabs and twists, drawing gasps of pain. She smirks, enjoying his suffering. She brings out her favorite toy, a heavy, spiked ball, and, straddling him, she grinds it into his crotch, her eyes gleaming with sadistic pleasure as he cries out in agony.