When Arizona Won

On an Arizona ranch, the assistant foreman and the owner's daughter Anna fall in love. When war breaks out in Europe, and the foreman, a Scotsman, returns to join his regiment, the assistant foreman goes with him. Later, the owner, a captain in the state militia, is called to active duty because of trouble at the Mexican border. After the United States enters the war, Anna and her mother, in Germany to settle a relative's estate, cannot leave because they are American citizens. When the foreman, now a colonel, receives a letter concerning their predicament, the assistant foreman, now an orderly learning to fly, takes an airplane to rescue them. After he locates them, he steals plans for a large German offensive, but is forced to land in No Man's Land, where he is arrested as a deserter, and the women, as spies. The colonel proves his innocence, and Anna's father arrives with American troops to stop the execution of the women. After the German offensive is stopped, the orderly is decorated with medals.