Nadine (Hailee Steinfeld) has always been a quirky, lonely and unsociable girl since she was a child, and is often bullied by her classmates. Krista (Haley Lu Richardson) is like a light, illuminating Nadine's life. They have been inseparable since they met, sharing happiness and secrets with each other. Time flies, and the two girls grow up and enter high school, and their feelings have never changed. Nadine's brother Darien (Blake Jenner) is handsome, handsome, sunny and cheerful. His presence makes the cynical and mature Nadine seem even more out of place, but Nadine doesn't care because she has the friendship of Krista. However, one day, Nadine was shocked to find that Krista and Darien were lying on the same bed. At the same time, Nadine fell in love with a boy named Nick (Alexander Calvert), but she couldn't get into his circle at all.