When outlaw Rod Miner arrives in Mineral City to see his father, who owns the General Store, he soon discovers that a Federal Marshal is on his trail. After Rob and his gang ambush the marshal, they attempt to kill Roy.

When Sheriff Blodgett is shot at while investigating a gang of rustlers, Roy is named the acting sheriff. However, another deputy by the name of Morgan isn't happy about it and tries to stall Roy's investigation. As a result, Roy gets suspicious and soon discovers that Morgan wanted the job because he was working with the rustlers.