One year into a plague of flesh-eating, mind-altering worms, the nocturnal town of Ashland, Ohio, has embraced the parasites’ rule. Under cult-like Mayor Joshua, zealous Ranchers spread their gospel-by persuasion or by force. A trio of uninfected women cling to survival through scavenging, extreme hygiene, and evasion. But everyone breaks eventually, unleashing betrayal, sacrilege, and body horror.