Williams resigns his office as sheriff and leaves town with his wife and child. That afternoon, Rex, known as "The Spider," swaggers into town and robs a saloon. The man escapes, followed by Burns, the new sheriff, and a posse. Williams leaves Anna and Ella in the wagon by the side of a stream while he goes in search of a ford. Rex comes upon the outfit and recognizes Anna as the wife of his foe. Capturing the woman, he binds her and throws her into the wagon. Thrusting Ella aside, the desperado drives off. The posse arrives just as Williams returns. The husband is frantic because of the mysterious disappearance of his wife and daughter. The men secure the aid of Red Bird, an Indian trader, and take up the pursuit. They come upon Ella, who tried to follow the wagon. The men learn the story of the "Spider's" villainy. Discovering that he is being pursued, Rex deserts the wagon, forcing Anna to accompany him. The two crawl up the mountain side until they reach a tiny ledge. Red Bird finds their trail. Brought to bay, Rex uses Anna as a shield while picking off the members of the posse. Three fall victim to his deadly aim. The pursuers resort to strategy. While they attract the "Spider's" attention, Red Bird makes a detour and comes upon the outlaw from behind. A desperate hand-to-hand combat ensues. The frantic husband and the posse toil towards the ledge. Locked in deadly embrace, Red Bird and the "Spider" reel back and forth. A knife flashes just as a pistol is fired. When Williams and the posse arrive at the spot, Red Bird is breathing his last. Rex, however, has committed his last crime; a bowie knife is buried to the hilt in his heart.