These mistresses did not care what this guy did. They ignored him but when he became rude to them, they could not allow it. He had to be taught to stop being rude to others and the mistresses did it by using pony play mistress to do it. He was turned into a human pony and he had to carry them all over and endure their whipping and caning, which was brutal.
Lady Krasaviza loves horses but she wanted to try a human one today. She had had enough of the real ones and she wanted to test how her slave would measure up to a real one. So she took her slave to the woods where she turned him into a human pony. She enjoyed dominating him. He was in a lot of pain but she did not care what happened to him.