Miss M, a sadistic domina, keeps her slave, P, forever caged, his massive cock locked away. Today, she focuses on his ass, inserting an anal hook and stretching his tight hole with her skilled fingers. She uses various toys, including a large anal plug and a dildo, making him squirm and cry. She pushes him to take more, gaping his ass wide. Despite his protests, she brings him to a degrading, chastity-orgasm, his body shuddering as he's forced to come anal only.