When the socially awkward (music prodigy) new kid on campus seeks to win the affections of the most popular girl in school, he enlists the help of an unlikely mentor--the school janitor.

17-year-old Arlo struggles to act as a role model to her little sister, Millie, while rebelling against the pair's boy-crazy mom. Following her journey to adulthood, the film adopts a naturalistic style to tell the story through an objective lens.