Sierra Casanova is the most popular girl in the 9th grade. Jay Martin is the most athletic and popular guy in school. They've known each other since kindergarten, and know each other better that anyone else. They both had it it all: rich parents, an awesome house, and all the friends in the world. Everyone thought they were perfect fir each other. But when Halle Reynolds steps into the picture, all hell breaks loose. Halle takes an interest in Jay, Sierra's parents start having financial trouble, and Sierra doesn't know it yet, but slowly everyone will start to hate her, and love Halle more. The only person that keeps Sierra happy is Jay, but he seems to be falling for Halle. Sierra suspects that Halle is trying to replace her, and is she right?