The apocalypse has reached full strength and life, as they have known, has ended. Major Charles "Butch" Bradley has managed to lead his group of survivors to the safety of Fort Carson, Colorado. Things have settled into a routine for the Major and his men as well as the civilians in his care. His search for Dr. Lemuel Sanderson, mankind's best hope for an end to this hell, however, continues. When he receives a summons to the communications room, he anticipates news on his missing doctor. The information he receives is convincing enough for him to disobey orders and head to the Mexican desert. Meanwhile, Stephen Russo and his friends have taken up residence in one of the houses on the base. Their schedule is interrupted when they notice that one of their roommates, a grumpy outdoorsman named Chester Boone, failed to return from a hunting trip the night before. Stephen sets out to find his friend and soon realizes the base may not be the safe haven everyone thinks it is. As Major Bradley races to locate his missing doctor and Stephen searches for Chester, neither realizes that Benton Worthington III, the man responsible for the doctor's disappearance, has been working on plans of his own.
