Chaos consumes a small town when a chemical facility explodes releasing a deadly toxin. Moments after the leak, the town's residents show signs of mutation, causing the military to quarantine the area leaving any survivors helpless and trapped inside. The story follows Jim whose normal day turns into a walking nightmare as he fends for himself isolated within the red zone. Whilst he eludes flesh eating zombies he is discovered by and finds temporary solace with couple Scott and Julie and moody loner Alex. The group must now band together and defend themselves long enough, against those affected, in hopes of being rescued.