The residents of a small town are excited when a flaming meteor lands in the hills, until they discover it is the first of many transport devices from Mars bringing an army of invaders invincible to any man-made weapon, even the atomic bomb.
Lin McAdam rides into town on the trail of Dutch Henry Brown, only to find himself in a shooting competition against him. McAdam wins the prize, a one-in-a-thousand Winchester rifle, but Dutch steals it and leaves town. McAdam follows, intent on settling his old quarrel, while the rifle keeps changing hands and touching a number of lives.
The Black Rebels Motorcycle Club ride into the small California town of Wrightsville, eager to raise hell. Brooding gang leader Johnny Strabler takes a liking to Kathie, the daughter of the local lawman, as another club rolls into town.
