In a dimly lit dungeon, the curvy mistress, her big boobs heaving in a corset, commands her sub to his knees. She tugs at his balls, earning a whimper, before attaching a heavy metal clamp to the tip of his engorged dick. She watches, relishing his discomfort, as she slowly pulls a leather cock ring up his shaft, stretching it painfully. She then proceeds to give him an intense, brutal CBT session, leaving him gasping and begging for more.