The story revolves around a new high school student, Jo (Meaghan Jette Martin) , who agrees to befriend an outcast, Abby (Jennifer Stone), at the urging of Abby's wealthy father in exchange for paying all of Jo's costs for the college of her dreams. Jo and Abby team up to take on the school's mean girls, the Plastics, Mandi (Maiara Walsh), Hope (Nicole Anderson) and Chastity (Claire Holt).