An hour from the closest West Virginia mining town, fifteen-year-old Wren Bird lives in a cloistered mountain cabin with her parents. They have no car, no mailbox, and no visitors-except for her mother's lifelong best friend. Every Sunday, Wren's father delivers winding sermons in an abandoned gas station, where he takes up serpents and praises the Lord for his blighted white eye, proof of his divinity and key to the hold he has over the community, over Wren and her mother. But over the course of one summer, a miracle performed by Wren's father quickly turns to tragedy. As the order of her world begins to shatter, Wren must uncover the truth of her father's mysterious legend and her mother's harrowing history and complex bond with her best friend. And with that newfound knowledge, Wren can imagine a different future for herself than she has been told to expect.