A romantic Western in which John saves his beloved Mary when she is about to marry a criminal.

Old Harry Todd and his daughter, Marguerite, are in the west prospecting for gold. They meet Broncho Billy, who takes dinner with them and later continues on his way. As he is riding across the plains thinking of Marguerite, he happens to see an Indian at the top of a hill, looking down upon the prospector and his daughter. Broncho Billy warns Todd and his daughter.

Old Silas Gregg lives with his pretty daughter, Vedah, in the western hills, unknown to the girl. Gregg is the leader of a band of smugglers, who have their rendezvous in his barn. Vedah is loved by Brant Graham, a sturdy young Hillman, and to insure his future, Graham gets the sheriff to appoint him a deputy, receives his badge, pins it inside his sleeve and is ordered to be on the watch for smugglers, who are continually getting goods across the Mexican border, Graham promises and leaves. Later he goes to Gregg's shack, puts the ring on Vedah's finger and asks to see her father, to gain his consent. Finding he has gone down to the barn they start in search for him. In passing the barn Graham suddenly discovers Gregg and his gang sorting over their goods inside.

Earl Briggs, a ranchman, and Carl Underwood, a sheriff, are in love with Grace Woodward. Earl is the favored suitor and in time Grace becomes engaged to hire. Sometime later the stage is held up by Broncho Billy, a notorious outlaw. A fierce battle ensues in the woods between the posse and the bandit, in which Broncho Billy is wounded

The accidental overturning of their "prairie schooner" kills a settler and his wife and leaves their little baby girl, Sunbeam, alone in the world. Discovered by Big Wolf, an Indian brave from a nearby tribe, Sunbeam is adopted and brought up as one of their number.

The sheriff of Sioux County, Arizona, is notified to locate the bandits' rendezvous. Carl Waters, the sheriff, scouts the country and finally locates them. Returning to the town saloon and dance hall Waters, who is smitten with the fair Caroline Heston, proposes to her. She promises to give her answer the following day.

Broncho marries a Mexican girl at the earnest entreaty of her dying father. Later a Mexican singer wins her love and, to get Broncho out of the way, she has him arrested and jailed on the charge of having assaulted her. In a frenzy of rage, Broncho secures the sheriff's revolver, escapes from jail and tracks the pair at his shack.

While on the way to visit her mother, Mrs. Bailey stops to feed the horses. She discovers that the oats had leaked out of the bag and she is compelled to ask assistance of a party camping nearby. During her absence from the buggy, her young daughter strays off into the woods and falls over a high cliff.

Broncho Billy runs into trouble in a bar when he gets into a confrontation with a bully. Since the bully has a gun and Billy doesn't, he's forced to endure the bully's humiliating tactics until he manages to get away. He determines to find himself a gun, learn how to use it and then go back and find the bully for a little payback.

Juan Yukas, a greaser, schemes with his sweetheart, Evelyn, to hold up the stage and rob the driver of the express box. Broncho Billy is infatuated with Evelyn, The coach is held up. Broncho Billy captures Juan and takes him to Evelyn's shack, to get a drink of water. Evelyn betrays herself. Although he loves her, his duty compels Broncho Billy to take Evelyn prisoner.