Mistress Zephy had this guy do some work for her but it was done so poorly that she could not help but wonder how the hell she had hired him in the first place. Since she had already paid him, she had to get her money back and she got it when she used her shit to punish and torture him. He got a rude shock as she did it but he learned his lesson.
Mistress Zephy did not like how this loser was always hanging around her and she wanted to make sure he stopped. So she tested him to the limit to see what his breaking point would be. The mistress got him to eat her shit and drink her pee as well as turned him into a foot slave and watched as his resolve died slowly. And that is how she gained what she wanted.