This epic Western-melodrama was based on the popular novel by Harold Bell Wright. Two old prospectors, Thad Grove (Charlie Murray) and Bob Hill (Bert Woodruff) find an infant in the cabin belonging to Sonora Jack (Mitchell Lewis), a notorious bandit. The girl, Marta, grows to womanhood (to be played by Dorothy Mackaill). Hugh Edwards (Pat O'Malley), who has been falsely accused of embezzlement, escapes to the West, where he meets Marta and they fall in love. Natachee (Robert W. Frazer), an Indian educated in White ways, rescues Marta when she rides into a storm, and Edwards saves him from bandits. The grateful Natachee shows him the mine with the iron door, which contains a wealth of gold. Sonora Jack shows up, and, angry at not being able to find the mine himself, kidnaps Marta and holds her for ransom. Edwards and Natachee hunt him down and rescue the girl. Natachee kills the bandit, and papers prove that Marta's father is the one who embezzled the funds and that he confessed before he died. Sol Lesser, who produced this film, remade it as a talkie in 1936.
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