 Pop Ormsby (Harry Shannon) wins the contract from the Army Engineer Corps for the construction of the Alaska Highway connecting Alaska to Canada. The elder of his two sons, Woody Ormseby (Richard Arlen), decides he had rather fight with bullets than bulldozers but is assigned by the Army to work on the project. Woody and his younger brother Steve (William Henry) are both rivals for the affection of Ann Caswell (Jean Parker), the daughter of Road Engineer Blair Caswell (Edward Earle).