Texas Ranger Johnny, poses as a hired gunman called The Dog Town Kid in order to infiltrate the outlaw gang, to uncover a plot by a crooked lawman, Sheriff Bradley, and a large landholder, Jim Morgan against the smaller ranches and the homesteaders.
Ted Warren returns from WWI to find that everyone thinks he was dead. The culprit is Kent who intercepted his mail, rustled the Warren cattle, took over the Warren ranch, and is now after Ted's girl friend. When Kent's henchmen fail to kill Ted, Kent shoots Ted's father and leaves him for dead. But only wounded, the plan is to have Warren appear as a ghost to get a confession from Kent.
Trouble has been reported in Placerville where Tom Barton's brother is the Marshal. Arriving Tom finds a phoney Marshal in his brother's place. Learning that Clark is behind the all the trouble and that he is after the Madison stage line, Tom joins up with Mary Madison to fight Clark while he also looks for his missing brother.
Doran and the Sheriff have a scheme to bring in an outlaw gang. Doran is sent to prison so he and the gang leader Mitchell can break out. This gets him into the gang but he is in trouble when it's revealed he is working with the Sheriff.
A lawman captures the notorious "Pecos Kid", who is tried and hanged for his crimes--then starts to have doubts as to whether the Kid actually committed the crimes.
An evil gang is involved in both cattle rustling and the robbing of stagecoaches. Hoppy must stop them without help from the sheriff who turns out be a major outlaw himself.
When Steve Harper chases down some rustlers, he loses his gun in the ensuing fistfight. After Wilson is killed, Steve's gun is found nearby and he as arrested. Jimmy Wilson breaks him out of jail and he heads after the real killer.
Chet Kasedon is after the Indians hidden gold mine but Chief Moya will not reveal it's location. He has also hired mining engineers Gale and Mortimer to locate the mine. When Gale sees Kasedon's cruelty to Moya, he switches sides.
Billy Donovan arrives looking for his sister's killer. When he hires on at the Halloran ranch where the mysterious Phantom has killed all the hands, it's not long before the Phantom shoots him.
Profiteer Alexander Stiles lays claim to a million acres of range in the Pecos River country, but a rancher named Claybor stands in his way as he has already claimed the water-rich location of Sweetwater as his own.
Hoppy returns to find Johnny in trouble. Buck Peters has been shot by Porter who made it look like Johnny did it. When Johnny flees he runs into Linda. He takes a liking to her only to learn her father Shanghai is one of Porter's gang. Going after Shanghai, he gets captured by the gang and Porter now plans to kill him. But Hoppy is near by and Johnny will get unexpected help from Shanghai.
Perrin plays a boxer whose manager takes him out to a ranch for training, but Perrin soon discovers the ranch foreman is responsible for a $100,000 jewel heist.
Tex Weaver is working under cover to bring in a gang of bank robbers. When he is killed, Tim Ross, a marksman with Doc Shaw's traveling show, takes over. Posing as a Mexican he lays a trap for the gang.