This is one of many cheap westerns John Wayne made during the 1930's. The movie starts out with John Wayne in a store buying a suit of cowboy clothes then picks out a new gun. The storekeeper charges him $200 for the clothes and gun. That was a lot of money in the 1930's. He asks for directions to the Rainbow Valley. When he gets there he meets Gabby Hayes in a Model T Ford. After they part Gabby Hayes is attacked and chased by outlaws. John Wayne rides up from behind and one by one knocks the outlaws off their horses. In this whole movie there is lots of shooting and gunfights but no one gets hit or seriously wounded. No one ever seems to gun out of bullets or has to stop to reload. They also ride their horses very fast and everyone seems to run from one place to another. The plot is that a gang of outlaws are trying to keep a group of miners from building a road to the outside. They hope to force the miners to sellout cheap if they can't move their gold to the outside. John Wayne turns out to be an agent sent by the Governor to infiltrate the outlaw gang and foil their plan. In the end John Wayne opens the road, blows up the outlaws and gets the girl.