The wagon train is making it's way steadily westward when the peace is disturbed by the sound of shooting. Seth Adams delegates scout Flint McCullough to find out what is wrong. When Seth catches up with the scout he finds him with a small company of troops and an Indian Chief's daughter, Mokai. She is on her way back from Washington with a peace treaty. The treaty will not come into force until she has delivered it to her father and she too is safe. The company came under attack from a renegade band of Indians. What worries Flint is that the arrow he finds is from Mokai's own tribe, but the braves were not. Added to that, the Lieutenant supposedly in charge is having trouble keeping his own men under control and is openly hostile to the Chief's daughter. Seth realises that the only way to get the treaty safely to the Chief is to send Flint along to keep an eye on them. Flint soon finds that he has his work cut out.