Growing up can be challenging, especially as a seventh-grade adolescent. Between parental expectations, school demands, distracting peer pressure, and an annoying little brother named Patrick, Molly McCormick is trying her to best to navigate life. Unfortunately, nobody seems to take her passion for music seriously. With a local piano competition fast approaching, Molly is determined to prove to everyone how important music is to her. But will multiple setbacks, obstacles, and her obnoxious brother prevent her from succeeding?