In a future where human life spans one year, Kade Greene stops aging. After a traumatic twist of fate, he does the forbidden: He leaves the city, embarking on a journey across the post-apocalyptic United States East Coast in search of his missing mother. Kade is discovered in the Boundaries by Lila, a wild orphan girl, and her father figure, Julian. The three venture out together to find Kade's mom, only to be faced with the perils of nature, dangerous RED agents, and a government conspiracy that has kept the world living a lie for generations.