She's the student body president, kind of snobby and very straight laced. She's been spying on students suspected of being in a gang, not realizing that the group's leader had ties to a mafia group. Using his resources, the leader of the group of boys arranges to have her kidnapped and brought to the gang's hideout to teach her a lesson about sticking her nose into other people's business by turning her into his plaything.
If you're willing to play more than one character and turn this into more of a group activity among the gang members that'd be great, but it's not entirely necessary. I'm looking for someone who can be somewhat cruel and rough with her, but I'd like to keep broken bones and anything more serious than minor cuts and bruises out of this one.
Anything else is open for discussion.