High schooler Maggie is about to start her senior year, but there's drama afoot: Her parents have just split up, she's forced to leave her dad and best friend to move to New York City with her mom and she has to start classes at a fancy Manhattan prep school. Things seem to be looking up when she hooks up with a group of her new school's most popular girls, but when she learns their little secret – that they keep a secret wall full of mean gossip and commentary about the other students at the school – Maggie adds to the cruel scrapbook to fit in. Will she turn around and be true to herself, or will she ultimately become a mean girl herself?