Lieut. Greig, a blasé young Englishman, becomes interested in Doris Barnett, a fair young American, and through her brother Jack secures an introduction. They meet again in Cairo, Egypt, where the lieutenant urges his suit for the hand of the fair American, but is rejected. Doris slips away at night to consult the Sphinx as to whether she has done right in refusing Lieut. Greig. She is seen by some prowling Bedouins and taken captive to their native village. The next morning her guide returns to demand a ransom. The lieutenant, learning of Doris' plight, starts out alone to effect her rescue. He meets an Arab, and, overpowering him, takes his clothes. A burnt handkerchief serves as coloring for Greig's face, and in this disguise he proceeds to enter the Bedouin village. During the night he succeeds in bringing about Doris' escape. However, their departure is soon discovered and the Bedouins follow in pursuit. A running fight takes place in the desert and when Doris and the lieutenant are about to abandon hope, a rescue party arrives and puts the Bedouins to flight.