In this movie serial Professor Sturgess invents a miraculous engine which can draw unlimited power from the atoms of the air. When the professor is killed, his daughter and her fiance must fight to keep the secret of the power engine out of the hands of evil Weston Dore and his henchmen.
A mining expert helps a girl and her kid brother defeat an evil claim jumper.
Tex Sherwood has just come into possession of a valuable piece of land that will be irrigated by a new dam. Banker Holman knowing the deed must be registered the next day, offers a $50,000 reward for Tex's capture.
Against explicit orders, a vainglorious cavalry major insists on counterattacking a gang of hostile Sioux Indians. His captain refuses to comply and is arrested for insubordination and cowardice.
Known as the White Outlaw for the kerchief he wears, Johnny Douglas decides to go straight. Getting a job as a cowhand he gives the kerchief to his new friend Ted Williams. When the rancher's daughter, the girl friend of Ted, agrees to marry the man holding the note on the ranch so he won't foreclose, Ted uses the kerchief when he robs the stage. When Ted is spotted and jailed, Johnny has a plan to return the money and clear Ted.
With help from his talented horse and dog, a marshal captures bandits.
Fired from his job for shirking his duties, the 'Knight of the Plains' Bart Miller stumbles across a would-be stagecoach robbery and he rescues damsel in distress Betty Taylor. He takes Betty and her pretty girlfriends to the ranch of her father Bill Taylor. Meanwhile Taylor's foreman Luke Hatton is plotting to rustle his boss' herd with the aid of the corrupt lawyer Harkness.
A ranch foreman captures a notorious gang of gold thieves. He ties them up and leaves them for a pursuing posse while he goes out to find the gold they stole. When the posse arrives, the gang's leader convinces them that the foreman is actually the gold thief, and the posse sets out in pursuit of him.
Richard Kingsley, son of a financier, trying to aid Marjorie Crenshaw and her sister during a raid on a New York roadhouse, is arrested. His father, enraged by the bad publicity, threatens to disinherit him if he doesn't go to Colorado in search of a mine....
