In pre-World War I Germany, Kaiser Wilhelm fathers a number of illegitimate children and sends them to various parts of the world to be reared by his loyal agents. Under the guardianship of Dr. Carl Von Strumpf, one of these children, Robert Busch, grows up believing that he is the son of wealthy German-American Richard Busch, but in reality, Strumpf and Busch are servants of the Kaiser. When the United States declares war on Germany, Robert expresses his earnest desire to enlist in the American army, much to the delight of his patriotic sister Emily. Before he can do so, however, Strumpf tells Robert the secret of his parentage, believing that the young man now will be eager to fight for Germany's cause. Robert feigns enthusiasm but secretly offers his services to the U.S. government, and with the passport provided him by the Pan-German league, he goes to Germany and kills the crown prince. Next, he shoots the Kaiser and blows up the entire palace, thus sacrificing his life for the principles of democracy.
—Pamela Short