When Darwin Merriweather, code name, Weatherman, hears about the deadly nationwide pandemic sweeping the country leaving millions dead, he sets about protecting his mountainside home. If the madness has hit the town below, he knows it won’t be long before scavengers climb the mountain. He plans on being ready. However, his work is interrupted when he receives a desperate radio call from two members of the special forces unit he once led. Pinned down, wounded, and with ammunition running out, the two men don’t have long to live. With his friend's lives at stake, Weatherman leaves the safety of his cabin. The journey to reach them is fraught with danger and deadly encounters. With time running out, Weatherman must call on all the dormant skills that once made him one of the most feared and unstoppable killing forces in the service. But even his skills and determination may not be enough to save his friends.