Steve Kinney and his henchman, Mort, are trying to stir up trouble between the local ranchers and farmers, behind a wave of rustling and lawlessness. Mort kills Vic, a Kirby cowhand, and lays the blame on Dan Harper, the leader of the farmers faction. Storekeeper Fuzzy Q. Jones, fearful of losing the outstanding charge-accounts he has on his books, drags his reluctant pal, Billy Carson, into the fray, and the two soon prove Kinney and his henchmen to be behind the valley's troubles.
The brother (House Peters Jr.) of rancher Bill Martin (Bill Elliott) is killed in a stampede started by cattleman. Bill returns to the Fargo country to take his brother's place and is welcomed by law-abiding cattleman MacKenzie (Jack Ingram)) and his daughter Kathy (Phyllis Coates). The leader of the ruthless cattle interests are townsman Austin (Arthur Space) and his henchmen Red (Myron Healey), Link (Robert J. Wilke) and Albord (Terry Frost). Bill has the idea of putting up barbed wire to keep the herds from been driven over the land cultivated by the farmers. He, aided by Tad Sloan (Fuzzy Knight), produces the wire by make-shift methods, but it proves effective. The cattleman charge in court that the wire is dangerous to their herds but lose the case. Austin orders his men to seize Bill, bale him in strands of the wire, and throw him on the stage of the town hall during a fall festival. Bill doesn't take kindly to this and it precipitates open war.
Landry has Sam Martin killed. When Tim and Chito find Martin and his son, Chip says Matt Potter was responsible. But when Tim and Chito start their search, no ones knows a Matt Potter.
Seeker Dean has found the gold he has been looking for for 15 years. Heading for the Government office, Boone Jackson kills him. Kickabout finds a cryptogram as to the gold's location and Sergeant Kinkaid solves the puzzle. But Jackson learns of the gold's location and to get it, he sets out to dynamite the dam that would flood the entire communuty.
Not having heard that war has erupted between the U.S. and Mexico, a wagon train heads west, only to find itself threatened by the Mexicans who have teamed up with hostile Indians.
Despite being promised to another man, a young orphaned woman falls in love with man working at the farm she lives in , and together they escape. According tradition in Northeast Brazil, her aunt goes after them, in order to kill them for revenge.
Roy returns home to fine a range feud between the cattlemen and the sheepmen. When his friend is killed he finds the rifle had a defective pin. He learns the rifle belongs to a ranch hand named Barker and that a third party has caused the feud. When he captures outlaws trying to blow up a dam, he claims Barker was the killer. But Barker has switched rifles and the outlaws now accuse Roy and Roy finds himself in trouble.
Finding Indians stealing from his ranch, Gene learns they are suffering from malnutrition. Store owner Martin is cheating them and now he is after the Chief's valuable necklace. When the dying chief is found, having been attacked and robbed, Martin blames Lakhona who would become the new chief. When Gene helps Lakhona they soon find themselves fleeing from the law.
Eduardo Belmonte overhears his new step-mother, Maria, and her lover, Don Ricardo Gonzales plotting to take over the Belmonte rancho on the night of the fiesta given by her husband, Don Carlos Belmonte. Eduardo offers Maria money if she will depart the hacienda premises, but she refuses and then accuses Eduardo of making love to her. The old Don doesn't take kindly to his son hitting on his step-mother and attacks him in a rage. The lights go out, the father is killed and Maria blames Eduardo, who escapes from the house, chased by Ricardo's men. The Cisco Kid and Pancho rescue Eduardo, who has been shot, and hide him while they investigate. Cisco discovers that bullets from Maria's gun, a handy little derringer, are the same type that killed Don Carlos. But the Alcalde arrests Cisco and Pancho, and Cisco is "supposedly" executed by a firing squad, but IS NOT shot and escapes by a trick. And now Maria and Ricardo are in real trouble with Cisco on the loose.
When Colt kills the men that murdered his father, he escapes his pursuers and joins Wolf and his outlaw gang. After two years Wolf breaks up the gang, deeds his ranch to Colt, and turns himself in. Now an honest rancher, things are going fine for Colt until Wolf's old gang shows up under a new leader. Colt get the Governor to release Wolf claiming the two of them can bring in the gang.
Rancher Reynolds has fired his men and hired killers and is now using a crooked land deal to put the other ranchers off their land. Calico finds the reason why when he runs into his old nemesis Porter.
Cattlemen's Protective Association agent Tom Wade and his partner Happy are assigned to look into the disappearance of rancher John Carroll, who has been abducted by Carson, who wants to use his out-of-the-way ranch as a base for his smuggling operations. Complications arise as Carrol's daughter, Rita, looking for him, has an unfriendly run-in with Wade, then later is herself kidnapped by Carson.
Jim Waters arrives at Ed Parks' ranch to find Parks' cattle herd mysteriously increased. Hamp Harvey has been losing cattle and he suspects Parks. But the culprit is Harvey's foreman Brent who gets his orders from the town's leading citizen Sig Barstell. Barstell wants Harvey's ranch and after trying to frame Harvey by killing Parks, Waters takes over and goes after both the killer and the rustlers.
Jeff arrives in town to see the Sheriff only to find him just killed. The culprit is Clay Wheeler. When Jeff becomes friendly with Letty, Clay sends his man Ortega to kill him. Jeff foils the attempt and gets him to confess that Clay was the killer. With only old-timers Lafe and Bill to help, Jeff heads after Clay and his gang.
A Texan robs a train in an effort to prevent his father from committing the crime. A young girl attempts to help him after learning about the theft. A cowboy friend demands a share of the money.