Lily Robbins has always been a model student, the one who always follows the rules. But suddenly, Lily is questioning the rules---both at home and at school -- and it's getting harder to keep her mouth shut about it. When Lily blows up and goes off at her science teacher, she suddenly becomes Ms. Popularity. And soon Lily starts thinking that being a little bit 'bad' actually feels good. Of course, in true Lily fashion, she goes all the way with it, adopting an 'alternative' hair-do, and designing a rebel T-shirt that pushes the dress code. But when a truly worthy cause arises, Lily's new reputation precedes her. Lily realizes she needs to regain the trust of those who matter most to her before she can help her best friend win against discrimination.