The Texas Rangers chase down a gang of outlaws led by Butch Cavendish, but the gang ambushes the Rangers, seemingly killing them all. One survivor is found, however, by an American Indian named Tonto, who nurses him back to health. The Ranger, donning a mask and riding a white stallion named Silver, teams up with Tonto to bring the unscrupulous gang and others of that ilk to justice.
Elmer Winslow is a soldier on the run from the Union Army, and Luke Budd is a cowboy with a broken heart. When the two misfits rob the corrupt sheriff of an old west town, they have no idea that a plague of zombies is sweeping the country, or that Geronimo's sexy niece may be their only hope of survival.
Left for dead in the remote Southwest, Frank is found clinging to life and in a state of amnesia. As he recovers, ominous memories begin to flash back...