 About to marry Jim Plummer (Forrest Tucker), Kate Foley (Adrian Booth) runs off to Nevada when Ed Bagley (Grant Withers) convinces her a quick fortune can be made robbing gold shipments that are being transported by the railroad. In Bannock City she meets reformed-bandit Frank Plummer (William Elliott), posing as Frank Norris, brother of Jim Plummer, who has being going straight and working as an express shipment guard. Jim also shows up and plans a robbery by stealing a train and hiding it in an abandoned tunnel. The two brothers are on opposite sides of the law with the now-reformed Kate caught in the middle.