The novel intricately weaves the emotional and physical journey of a heart transplant, following the lives of various individuals connected by this life-altering event. It begins with a young surfer's tragic accident and delves into the profound impact on his family, the medical team, and the recipient of his heart. Through poetic and deeply human storytelling, the narrative explores themes of loss, hope, and the interconnectedness of life, capturing the delicate balance between life and death with sensitivity and grace.

Set in a dystopian future, the story explores a society where unwanted teenagers can be "unwound," a process that disassembles their bodies for organ donation. The narrative follows three teens—Connor, Risa, and Lev—who are on the run to escape this fate. As they navigate a world that views them as expendable, they grapple with questions of identity, survival, and morality. Their journey challenges the societal norms and forces them to confront their own beliefs about life and freedom.

In this gripping novel, a death row inmate named Shay Bourne seeks redemption by donating his heart to the sister of his victim, a young girl in desperate need of a transplant. As the story unfolds, it delves into complex themes of justice, forgiveness, and the possibility of miracles, challenging the beliefs and convictions of those involved, including a mother grappling with her daughter's illness, a priest questioning his faith, and a lawyer confronting her past. The narrative weaves together their perspectives, exploring the profound impact of one man's quest for atonement on the lives of those around him.