Mistress Misia was out to have fun and she did not care who would be on the receiving end of her quest to have fun. The mistress baited this guy who was looking to have fun with her. Instead of that, he ended up in pain as she ballbusted him. She used her friend's help to do it. The gullible guy had thought that he would get to fuck both of them.
Mistress Misia was not ok with the things her slave had done and she had to teach him a lesson. She had told him repeatedly that she would not tolerate such kind of behavior and as a result, he needed to change. But he did not change and so he had to be forced to change. The mistress ballbusted him after she had stripped him naked. And after the pain she had inflicted on him, fired him.