 The film opens with a message telling the audience that the film is about more than the building of a road in the jungle; it is also the story of Scots, Irish, English, Americans, Africans, Indians, and Chinese working together to win the war, and that they are now ready to work together to win a peaceful post war world as well.The hour-length film concentrates mostly on the importance of the Burma Campaign and the Burma Road in supplying Chinese nationalist army and American forces (the tactical Fourteenth Air Force and strategic XX Bomber Command of "Operation Matterhorn") in the Republic of China with supplies to resist Japanese domination, in much the same way Persian Corridor needed to be kept open to keep the USSR supplied by the Western Allies.But the forces there have to confront harsh terrain and monsoons, and are driven out in early 1942.