American multi-millionaire Michael Brandon marries his eighth wife, Nicole, the daughter of a broke French Marquis. But she doesn't want to be only a number in the line of his ex-wives and undertakes her own strategy to tame him.

Hall is after Dennison's land and hires the Shooting Kid to finish him off. The Marshal sends Tex to help Dennison, but the Kid has been helped by Tex in the past and changes sides.

Hoppy and Lucky have been called in to investigate a series of stage holdups. The robbers are taking gold from Colby's mine and Hoppy suspects it may be ex-outlaw Colby himself. When Speedy strikes gold, Hoppy borrows it and announces a gold shipment hoping to catch the gang and their leader.

Hoppy goes undercover as a gambler from the East when Bar 20 cattle are stolen by unknown rustlers. Brennan/Talbot are twin brothers (one a casino owner, the other a rancher) and Hoppy believes they provide alibis for each other while one is out committing crimes. Hoppy gets a job in the casino to learn more but is exposed when a gambling gunslinger notices him.

G-Man Charles Bent Martin is sent out to break up a nationwide racket. A transport company is aiding fugitives making a getaway in exchange for the lion's share of their loot. Through an old friend, whom he once barnstormed in an air circus, Martin joins the gang as a pilot. He becomes interested in Carol Butler, a beautiful girl involved with the gang through the activities of her ne'er-do-well father.

A fussy shopkeeper's life drastically changes when his wife takes in two homeless boys.

Band tries to get an audition for a job at a prestigious nightclub.

Reporter Nicholas Ranson is jubilant when, on 17 Dec 1903, in Kitty Hawk, North Carolina, Orville and Wilbur Wright take their first airplane flight. Back home in Underwood, Maryland, however, his uncle Hiram F. Jenkins, owner and editor of the local newspaper, refuses to print the story. Nicholas quits and continues to work on his own airplane, with the devoted help of his little daughter Peggy. Peggy is actually the first in her family to fly when her friends, Patrick Falconer and Scott Barnes, induce her to get inside a large kite they have made, and run with it in a field until she is airborne. The kite is caught in a tree, however, and Peggy gets a black eye. Later, Nicholas dies when his experimental airplane crashes, leaving his wife and children alone. By Peggy's adulthood, planes are capable of flying at an altitude of 11,000 feet, and speeds of nearly 100 m.p.h. Peggy continues her father's obsession with flight by helping Scott and Pat to build a plane.

The invention of a machine that can cause remote explosions brings the attention of Scotland Yard and Bulldog Drummond.

Talbot uses a phony land grant to rule thirteen million acres, taxing everyone heavily and evicting those who won't pay. The Three Mesquiteers becomes mysterious "night riders" to fight this evil.