Howell breaks up a train robbery only to find that it's a fake. However the money is missing and he is blamed. He escapes and sets out to find the real thieves. He must also avoid being caught visiting the Collins ranch to see Doris.
As war looms in the Pacific, even cowboys are called on to fight the enemy. Horses are desperately needed by U.S forces stationed in the Philippines, and the Range Busters - Crash Corrigan, Alibi Terhune, and their newest partner, Davy Sharpe - are hired to accompany a herd to the islands. But first they must battle Axis spies right in Texas, as they foil a plot to steal the very horses destined for shipment.
The notorious outlaw Black Bart has reappeared and the Range Busters are sent to investigate. When they find that Black Bart is now a respectable citizen and that someone is impersonating him, they set a trap for the robber.
The Rough Riders are after a gang of rustlers. Marshal Roberts is posing as a wanted outlaw, McCall is the Marshal supposedly after him, and Sandy is on hand as a cook. Roberts hopes his joining the gang will help bring them in.
Ranger Eddie Dean is looking for the outlaw the Tioga Kid, a man he closely resembles. He runs into Joe Morino and his gang of rustlers at the same time Tioga arrives to cut himself into Morino's game. But Morino doesn't give in and in the showdown, Eddie and the Kid find themselves on the same side.
In early spring of 1833, the smoldering resentment of American settlers in Texas against their oppression by Mexico dictator General Santa Anna/Ana coming to a head. When a decree is issued that no more Americans may enter Texas, William H. Wharton, fiery head of a faction determined on independence or nothing, warns Stephen F. Austin that the time for half-measures is past. Austin, responsible for bringing the Americans to Texas as colonists, reminds Wharton that a settler's revolt against Mexico would dishonor his name and the arrangements he had with the Mexican government. He gets the "Whartonites" to agree to a general convention of all colonists. Almerian Dickinson, biggest land owner in the settlement of Gonzales, deeply in love with his wife Anne, warns Wharton that a bloody revolt would endanger every wife and mother in the colony. He proposes they send Austin to Mexico City to ask Santa Anna to grant Texans a voice in their own government.
"Nevada" and "Weary" Pierce hijack the loot taken in a bank hold-up by Les Setter, and his gang. They escape from Sheriff Jim Henry Warner. U. S. government horse-buyer David Ward is killed by Settler's men and Settler takes his papers and goes to the ranch of Blaine and asks for the horses Ward was to buy, promising payment from the government later. He also takes an interest in Ina Blaine, much to the resentment of her sweetheart Ben Ide. "Nevada" and "Weary" are hired for the horse round-up but Setter has them and Ben arrested on a fake charge.
Harris and Rigby own a circus. Rigby is a counterfeiter and frames his partner. The Mesquiteers learn Rigby is the culprit and get a confession from one of his men only to lose the case when the man is murdered in jail. The Mesquiteers try again and send Lullaby to try and win some of the fake bills in a card game.
Lawyer Bowdre has started a war between the ranchers and the homesteaders planning to take over the homesteaders land when they are wiped out. Rancher Dan Stockton, having just married homesteader Gail Dawson, is caught in the middle. He suspects Bowdre is behind the war and it's not long before he gets a chance to prove it.
When Johnny and Mendez argue, the lights go out, and in the ensuing gunfight Johnny thinks he killed his friend Dick. Now refusing to wear a gun he crosses the border. But it is not long before he runs into Mendez and more trouble.
Brett runs a protection racket for an unknown boss. When Jeff Hayes arrives and opens a gambling den, they try to shut him down. Unlike the others who have given in, he plans to fight back.
Marshals Nevada and Sandy are after Scully and his gang who have been robbing stage-coaches. The Texas Kid is part of the gang and Sandy thinks he is bad but Nevada knows him and thinks he may be good.
The story of Frank Cassilis and Northmour as both seemingly try to protect the Huddlestone family against mexican separatists while each has their own purposes and agenda.
Tyler is a range detective whose brother stands accused of robbing a bank and murdering the bank president. To prove him innocent, Tyler must decipher his only clue, an unusual set of tire tracks.