Barbara Stockley, a pampered British society girl, grows restless with Hugh Rochedale, the fiancé her parents arranged for her, and escapes by accompanying her friend, Mrs. Madge Fields, on an airplane trip to Australia piloted by her brother, adventurer Alan Croft. He is unhappy at having Barbara aboard, but has bigger problems when he flies into a typhoon. When Alan crash-lands the plane in the ocean, Madge is killed and he and Barbara are washed up on an island inhabited by cannibals. Fortunately, the natives are frightened by Alan's radio set and believe that he and Barbara are gods. Giving up hope of rescue, Alan and Barbara marry in the sight of God, under a cathedral sky, without benefit of clergy. When a native girl cuts Alan with his razor and, by drawing blood, discovers he is mortal, she tells the local natives. Just as the savages attack, a search plane lands and chases them off. Alan is wounded and left for dead. Returning home, Barbara is spurned by her friends and family as having sinned, but Hugh Rochedale, realizing that she and Alan love each other, arranges for Alan, who was nursed back to health by friendly natives and put on a steamer heading for England, to claim Barbara legally.