In the wasteland after the genetic disaster, the mechanical holy city and the flesh and blood wasteland have been at odds for hundreds of years. When Bladebreaker Aiden discovers the symbiosis gene that can fuse gears and blood vessels in the rusty cemetery, and when the Siren of the Eye of Judgment retrieves the memory of human nursery rhymes under the mechanical body, the "First Man" chip pursued by the two factions reveals the truth: the continuation of humankind is never in pure machinery or flesh and blood, but in the palm lines that accept each other - gears will rust, blood will solidify, but the courage that makes every life meaningful is a covenant that will never fade.
