In World War I, French fighter pilot Lt. Claude Maury (Paul Muni) gains a bad reputation in his squadron, flying off on "lone wolf" missions. More importantly, Maury continually returns to base with his air observers/gunners killed or wounded. Others believe he is either "jinxed" or dangerous, and only Lt. Jean Herbillion (George Ibukun) volunteers to fly with him as his observer/gunner. Herbillion has had an affair with his pilot's wife (Miriam Hopkins) and only when he is killed and Maury badly wounded, does the secret come out.