In a dungeon of shadows and restraints, a Maitresse commands her chastised subject to endure an unyielding 24-hour ordeal. His genitals are encased in an unbreakable, locked chastity device, while he's made to service her every whim. The Maitresse, a vision of kink in her corset and heels, delights in his torment, pushing him to the brink of madness with denied orgasms and cruel, delicious tortures.