When a prototype weapon is stolen from a government facility a software engineer unknowingly becomes involved when he receives the key disk needed for detonation. With no help from authorities he is forced to team up with a suspended FBI agent to stop the group of criminals from destroying a major US city.

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, a young man isolated within the red zone, as he eludes flesh eating zombies in an attempt to win back his freedom.

After a meteor shower strikes Los Angeles, toxic smoke is released across the city causing people to physically change and become violent. A small group of survivors plans to vacate the city by heading to the coast.