Moira is a senior in high school when her best friend, Nathan, dies of cancer. Nathan was not only her best friend, he was Moira’s only friend, the only person she thought she needed or wanted in her life. Before Nathan got sick, Moira spent more time with him and his family than her own. After he was diagnosed with cancer, she started skipping classes and meals to spend every minute she could with him. Moira’s world crashes when Nathan dies, and her parents are at a loss as to how to help her. They decide to send her to Castle School, far from home, deep in the woods of Maine.