Augustina López

California's gold discovery in 1848 draws a "tide of empire" to the area, which becomes ripe for bandits.

Two prospectors, one the father of Sky "Lightning" Bryce and the other the father of Kate Arnold, find a large gold deposit belonging to an Indian tribe. They head for home but each sends a note to their respective off-springs advising them of their good fortune. One of the fathers conceives a plan of taking a dagger and wrapping a piece of string around the blade, after which he prints on the string with a lead pencil, the exact location of their find. If something happens to them, the string goes to the son and the knife to the daughter. That night an Indian approaches their camp and blows some mysterious wolf powder which causes a man to see wolves in place of human beings. Lightning's father see his partner as a wolf and stabs him to death; later he is brought into town in a dying condition but before dying, hands the knife and the string over to the sheriff with instructions to deliver to Lightning and Kate.

In 1840, Sam Lash heads west for adventure. He meets up with some Mountain Men, and they head for the Rockies to trap beavers and cats. In Taos he meets Lola, a beautiful Mexican girl from a proud and rich family. They fall in love and he persuades her to elope with him. After they get married, Sam is torn between his love for Lola and his yearn for traveling.

Real-life outlaw Joaquin Murietta, who (according to this film, anyway) is a latter-day Robin Hood, dedicated to driving land-grabbers and corrupt politicians out of Spanish California.

Wing Foot is a Navajo educated in an otherwise all-white school. He experiences prejudice from both the whites (because of his race) and the Navajos (who disown him because of his upbringing). Thus, Wing Foot is looked upon as neither Indian nor white, but simply a "redskin".