The Unknown Cavalier

Hero is center of plot by a gang of lawless whites to convince Indians he killed one of their number, but finally clears himself.

The hero must solve the murder of his benefactor within six months in order to inherit a valuable ranch.

Don Luis O'Flagherty (Ken Maynard), a daredevil comes to the rescue of his long-lost father, "Tiger" O'Flagherty (George Nichols), the supervisor of a supply-wagon train destined for the miners in Sonora. Tiger is being terrorized by Jesse Wilks (J.P. McGowan), who hopes to starve the miners out of their claims. Falling in love with Tiger's ward, Sally (Dorothy Devore), Don Luis manages to turn the tables on Wilks, who is killed attempting to rob the supply train.

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.

Steven Bancroft, a young officer in the U. S. Calvary, is given the assignment of ensuring that dirty-work by agents of Spain, Mexico or Russian aren't going to keep statehood-for-California from becoming a reality. Bancroft uses his guns to settle any debates regarding international laws.

Assigned to catch a gang of outlaws, officers Bruce Kenton and Paddy Halloran rescue Helen Morgan when her wagon is attacked by the very same gang. Through a ruse, Kenton manages to infiltrate the gang, which is holed up in the lawless community of Caribou Flats. While in the employ of villainous trading post operator Jack Blake, Kenton discovers that Blake is not only the leader of the gang but also the man who murdered Helen's brother.

After a work crew stringing telegraph wires across the Great Plains is slaughtered by Indians, Pat O'Leary, the company superintendent, must take out another supply train to make the dangerous trip across open country. The Indians attack and are driven off. On the day the wires are finally strung, the settlers gather to hear the first message from the East.

Cal Roberts can ride anything with four legs. He enters the contests held at big rodeo. He wins all honors and meets a girl who races horses to help her father clear pressing debts. Complications follow, but Cal wins the girl.

Dick Scott takes his Wild West show to the Balkan kingdom of Alvania where the boy king of the country commands the troupe to give a performance. The king is greatly impressed with the American cowboys and makes them his palace guard. The prime minister starts a revolution, and Dick and the Americans put it down. The boy king sanctions a romance between Scott and Ruth Elliott, the royal governess.

"Flash" Lanning returns to Bozzam City from the East to put an end to cattle rustling. Gloria Hallowell, who has known him by reputation, falls in love with Lanning but believes that he loves Ellen Bosworth, an eastern "lady." Campan, the leader of the rustlers, hoping to lure Lanning into a trap, kidnaps both girls. Lanning rescues the girls, punishes Campan, and indicates to Gloria that she is the girl for him.

Bill is a gambler, whose friend Scipio goes in search of his wife Jessie. Jessie, fed up with her life of poverty, has run off with the wealthy and villainous James. She has left behind her two children on James' promise that she can send for them later. Scipio leaves the tots with Bill when he goes on his search..

A ranger joins the outlaw gang whose boss he believes is a murderer.