Aspen McGuire has always been an outcast. It might be because of her love for Tumblr, Netflix, and cats. Maybe it's even because she prefers to have her nose in a book, over getting drunk at parties, unlike the other freshmen at her old high school, Cornier Secondary School did. But when disaster strikes at CSS, and she's forced to go to Mount Bridges Private School, everything in her life changes. Carina Shelbys is everything that Aspen is not. On her victory lap of high school, she is student body president has loads of money, and is the trophy girlfriend of the school's quarterback, Ryan Stevens. Aspen and Carina couldn't be any more different. The only similarity the two have is 'The Sister Project' that just started at Mount Bridges. The Sister Project is where a senior girl gets "matched up" with a freshman girl, and has to teach the freshman the strings of high school. What happens when the pairing begins not only effecting them in school, but also out?