Abby is a chemical engineer who leads a gang in an abandoned military base in Texas. He makes a deal with Lt. Muldoon and his men to sell them large quantities of DC2, a deadly biochemical agent. When Muldoon discovers that Abby has an extra supply, he tries to take him hostage, accidentally releasing the gas into the air. The gas mutates most of the town's residents into zombies, and Abby and him gang must fight the infected and those responsible for the release you are one of the survivors