Hell bent on avenging the death of his father, Johnny Black vows to gun down Brett Clayton and becomes a wanted man in the process while posing as a preacher in a small mining town that's been taken over by a notorious Land Baron.

When miners blast for gold in the 1870's, they accidentally release ancient creatures known as Tommyknockers. The Town of Deer Creek, Nevada is soon under siege with only a handful of survivors held up in the local saloon.