 It is 1876 and the wagon train is headed west when the Indians attack. They kill the wagon master so the boys volunteer to lead them to their new homes in Overland Valley. When they get there, the find that they paid too much for what they got, but they clear the land and build their homes. The boys bring cattle to the settlers so that they can begin their herds. When Judge Platt finds that the railroad is coming through the homesteader s land, he tries to force them out with tax after tax and then thugs. But the boys are there to defend the settler s and help them keep their land.