After a young inventor discovers a powerful new explosive, agents from a German chemical firm induce him to study at a German university. While there, he is repelled by certain aspects of the people, and he leaves for Belgium. When the war begins, the inventor saves a Belgian burgomaster's daughter from Prussian invaders. The inventor and the girl endure horrible suffering because of the war, but they find happiness at its end, while the formerly fighting nations direct their effort towards world peace at the Paris conferences. The assassination of Kurt Eisner of Bavaria occurs at the end.

Director: Frank Borzage