Sequal to "Beau Geste," the story of Michael, Digby and John Geste in the French Foreign Legion. The story begins as three Legionnaires do not return promptly from furlough and end up in the poky. There, the hero duels with a traitor and wins, causing him to gain the designation "Beau Sabreur." Later he is sent into the desert to learn the ways of the Arabs and to help forge a peace treaty. There he encounters a lovely American journalist. Meanwhile the defeated traitor tries to stop the treaty from going through.