The Iron Horizon

THE SKY WAS THEIR CAGE. THE RAILS WERE THEIR PRISON.Humanity survives aboard the Behemoth—a massive city-train tearing through a frozen wasteland of ash.When mechanic Elias Thorne uncovers a forbidden AI, he becomes the Syndicate's prime target. Forced to flee into the dark with scavenger Lyra, he must cross the treacherous Ash Sea to reach the Midnight Terminal—the only place that can clear the skies.Stop the engines. Let the world breathe.