It‘s the first day of classes at Kennedy High. We meet Sam McPherson, a unpopular girl, and her friends, Harrison, Lily and Carmen. And the popular ones: Brooke McQueen, the head cheerleader, Nicole Julian, the Devil impersonated, Josh Ford, Brooke‘s boyfriend and captain of the school football team, Mary Cherry, and Sugar Daddy. These groups hate each other. But unfortunately, Brooke is assigned to be Sam‘s lab partner in biology. Carmen tries out for the cheerleading squad. Sam tries to help her with the cover story on the school paper about popularity, but instead she ends up trying to get invited to Sam and Nicole‘s party, which will define who‘s hot and who‘s not. Josh decides to be on the school play, and that becomes an issue because Brooke doesn‘t want to date a drama geek. Carmen doesn‘t make the squad, because she is too fat to be a cheerleader.