Valerie Marsh and her three closest friends - Tara, Amber, and Kat - have just started their senior year of high school. Tara's a straight-A student with an Ivy League school in her future, Kat's the lead in every play performed at Riverbank High, and Amber is a popular cheerleader with boys lining up to date her. Valerie, meanwhile, has mediocre grades, works the light booth while Kat's onstage, and has never even gone on a date with a boy. When Tara gets a boyfriend and convinces Valerie to ask her neighbor Lucas out on a double-date, things quickly go awry, leaving Valerie to wonder who exactly she is and where she fits in amongst her friends and peers.