Everyone deserves a great love story, but for 17-year-old Simon Spier, it's a little more complicated. He hasn't told his family or friends that he's gay, and he doesn't know the identity of the anonymous classmate that he's fallen for online. Resolving both issues proves hilarious, terrifying and life-changing. Simon Spier keeps a huge secret from his family, his friends and all of his classmates: he's gay. When that secret is threatened, Simon must face everyone and come to terms with his identity.