While most seniors at her high school are worrying about prom and final exams, sixteen-year-old Sam is desperately trying to save her best friend Jesse's life. He has a rare, treatment-resistant form of cancer, and his odds of survival aren't good, and he may have only ten months left to live. Through every bit of his pain and anguish, Sam has been by his side--through the grueling, aggressive treatments and their awful aftermath, to sleeping in his room at night when he's afraid to be alone. Best friends and neighbors since preschool, Jesse and Sam's friendship is changing--now they're falling in love, and the passion between them grows stronger even as Jesse is weakens. Will they have a happy ending...or will their story end in heartbreak?