So...maybe..
A girl is famous (Singer and dancer), when she is at a concert of hers, she has guys to meet her out back, to meet her, you kow '' fans' But all they do is lure her into their house, once she is in, she can't get out of the house..

Or this idea

Wow.. I thought you were different
There is a fancy store and its just for rich people.Its a slave shop, women slaves. So this guy goes in there and buys the youngest for his son which is his birthday that day, so he brings her home to the party. And giving it to the son, and when they see each other they are mad at each other, cause two days before they made out in the beach and the day after, she was kidnapped. Anyways he is a cruel man to his slave. He forgets about her from that one day he saved her and is cruel to her. She tries to escape but she couldn't. Will she ever get out?

Or..

Entertainment
A vampire singer guy wants one of his dancer's to be his slave. so he makes this competion, this girl wins. She meets him and she dances near him.When they are alone he lures her to his house and she cant get out once she is inside. So now She is his slave and has to do what he wants.

or a vampire kidnaps the human

or a gang kidnaps a girl
Does anyone want to be the males you like?