Nathan Harris has always lived a quiet, uneventful life. Every morning, he leaves his isolated house on the edge of town to ride the cable car up to the top of the snow-covered mountain, where the Rey Research Facility waits. There, he works all day with his best friend and fellow scientist, George Davidson, until it is time to go home for the night. Science is his passion, and his world is one of peace and stability. Until now. When their latest assignment goes horribly right, Nathan and George find themselves in possession of a terrifying secret—a zombie has escaped their lab to run loose in the facility. Worse still, they quickly become convinced that if anyone were to find out about it, the two of them would be forever stigmatized as mad scientists. After all, no one accidentally creates a zombie. With only their wits, the lab's resources, and George's arsenal of video game knowledge at their disposal, the two set out to stop the zombie before it is too late.