RJ, a pharmaceutical salesman and former college athlete, can't shake the death of his best friend Will, even after thirteen years. In a long letter to his father, he describes being returned again and again to the days surrounding Will's death, where RJ is given a chance to prevent the deadly car accident and save his friend. After RJ's repeated unsuccessful efforts, he turns his attention to the recipients of Will's organ donations. As we learn more about Will's life, we watch RJ decline into depression and self-sanity-questioning. The organ recipients are a pediatric surgeon, a former professional baseball player, a grizzled plumber disowned by his family, and others who leave us questioning who deserves mercy and grace. Will RJ finally save Will? How will the living nightmare of his best friend's repeating death end? And will RJ survive the experience himself? What about those who need Will's organs? Why did RJ write this letter to his father? The fast-paced narration inspired by actual events is an emotional elevator, delivering surprises until the very last words. It leaves readers wondering what was real and what wasn't, asking deep and lasting questions about faith and destiny.