Parker struggles to reconnect with her twin brother, Charlie --- who’s recovering from cancer --- as she tries to deal with her anxiety about the future. Now that Charlie is officially in remission, life couldn’t be going better for Parker. She has landed a prestigious summer internship at the hospital and is headed to Harvard in the fall to study pediatric oncology. Enter Finn, a boy who’s been leaving strange graffiti messages all over town. Parker can’t stop thinking about those messages, or about Finn, who makes her feel free for the first time: free to doubt, free to make mistakes, and free to confront the truth that Parker has been hiding from for a long time --- that she keeps trying to save Charlie, when the person who really needs saving is herself.