Trampas accidentally becomes the custodian of two young children who are being sought by men in the hire of their Mexican grandfather, ""El Supremo,"" a powerful landowner. Trampas attempts to return the children to their American mother who lives in Laramie. Along the way he meets a woman card dealer, Melinda (Nita Talbot), who agrees to assist him in his task. With the children they pose as a homesteading family. Not only do they have to elude El Supremo's armed men but they must also avoid a Sioux war party which is operating in the area.
