Another Cinderella Story

A guy who danced with what could be the girl of his dreams at a costume ball only has one hint at her identity: the Zune she left behind as she rushed home in order to make her curfew. And with a once-in-a-lifetime opportunity in front of him, he sets out to find his masked beauty.
(IMDB)

I thought this plot was used too many times...But it was a nice movie. Not original though