When the Infected stalk the Black Hills, even a living enemy makes a welcome ally... Once called the Great Plains, the Dead Plains are a place in which no sane citizen of the Duchies dares set foot. The Infected roam the lands in starving packs and rare is the man who returns alive from an expedition. But when one of the regiments of the Grand Duchy of Denver disappears into those wilds under false pretenses, Colonel Geoffrey Douglas dares the Dead Plains to investigate. And Captain Marta Ramos, infamous pirate and thorn in his side, is not far behind. Foul events are afoot in the Black Hills: Lakota hunting camps leveled, and the Infected move as an army in purposeful, terrifying ways. Captain Ramos and Colonel Douglas must form an uneasy truce and venture deep into the hostile terrain of the Black Hills to discover what has prompted this invasion and how to stop it. If the Infected don't kill them first.