Mistress Serena had a bet with her boyfriend. She was angry at him but he did not know. She proposed this bet and she told him if he won, he could do anything he wanted and she would do the same to him if he won. She knew there were things he wanted to do to her sexually but she had always refused and this was his chance. She proposed a game she could easily win and when she won, she beat him up like she had planned to do.