In 1918, Olympe, a Parisian cabaret dancer, goes on holiday to her aunt's Normandy farm, where, disguised as a peasant girl, she becomes engaged to Capt. Hugh Warren of the American Expeditionary Force. Hugh goes to the front, and Olympe returns to Paris, where she is persuaded to join the French Secret Service and spy on De Montinbard, who is suspected of working for Germany. Using her charms, Olympe obtains proof of De Montinbard's guilt, but he escapes. Olympe is despised by the Parisians, who believe her to have been a traitor, and a fictitious death is arranged for her by the war ministry. Olympe, who is now known as Betty, marries Hugh in her aunt's home, and they come to the United States, where Hugh's aristocratic mother does not approve of his peasant bride. De Montinbard turns up under an alias and recognizes Olympe. She denounces him as a spy, and he denounces her as a notorious cabaret dancer. De Montinbard is arrested by French agents, Olympe is presented with the Legion of Honor, and she is finally accepted without reservation by Hugh and his proud family.—Pamela Short