In the small town of Alpine, Texas, a freak big-rig accident unleashes a mysterious toxic gas. For those unfortunate enough to breathe it in, the effects quickly become obvious: first death; then an unquenchable hunger for human flesh. Driven to sate their new thirst, the initial victims begin taking new ones at a frightening pace; friends, lovers, anyone with a pulse. And they're not stopping at Alpine.
Now, the future rests with a rag-tag band of Texas Rangers. Meet Rangers Rusk, Stocks, Anderson and Stillman. Armed to the teeth, they're not about to let an army of undead monsters stand in their way. But all their firepower might be no match for mutant fangs. Their success would contain a doomsday plague of zombies. And failure? Too horrible to imagine...