Hypnotizing His Friend's Sister

Brianne's brother is a popular guy. He has lots of friends that come over to hang out, and many of them think his little sister is hot. None of them are stupid enough to try anything with her, except for one. His friend Mark waits until his good buddy isn't home, then heads over to pay a visit to little Brianne. He's finally going to get to see Brianne naked, and she isn't going to say a word to her big brother about it, because she is going to be under hypnosis the entire time