The bad boy's good girl

Ella is a very sarcastic girl, good grades, and has never done anything bad. Nobody at her school even notices her. She has a past, that nobody knows about, except her parents and her bestfriend Alli. Mason was the total opposite, he does drugs, goes to party's. Mason is the most feared guy at school, along with his bestfriend's, Asher and Jared. He gets into fights all the time, some even with guns. What happens when they have a project together? Will Mason find out about Ella's past?