'First came the Dark and the Rise of the Dead—Next comes Hell's Fire.'Colorado's Front Range is covered with prehistoric, man-eating trees, and Dr. Delilah Crane, a biologist at Colorado Springs University, searches with a team of students for the source of the infection as the death toll in Colorado Springs rises.​Deputy Stephen Babineaux, a/k/a 'Wolfie,' awakes in his bed to find the world has changed. Shadow people follow Stephen wherever he goes, a constant reminder he should be dead. When he hears Mr. Oracle's broadcast that NOVAC Pharmaceuticals is behind the new outbreak, the task of finding missing pets for Sheriff 'Nomad' McClain is no longer a priority. Someone has tampered with the timeline and created tree zombies, and he intends to find the culprits.​Meanwhile, Captain Marc Powers (Highbrow) is suspicious of the pills NOVAC dispenses to the 'Returned' soldiers at Fort Carson. The disappearance of a squad on Pikes Peak brings help from Fort Bragg. The Black Company, led by Major Mix, has orders to use flammable chemicals to destroy the Dark Forest. Luna, leader of a werepuma pride, must warn Chief Chayton and the Cheyenne Mountain Wolf Tribe who are right in the line of fire…but every step leads Luna and her friends closer to a ring of conspirators led by a demon from Atlantis.