Kenneth Seeley, member of the U. S. State Department's Foreign Service Bureau, and Marge Weldon, a morale worker with the bureau, are assigned to an area in Mongolia dominated by an outlaw warlord. The latter captures the village where they reside and when escape is clearly impossible, Seeley blows up the outlaw's headquarters, losing his own life in doing so.
Ted Daniels, a ranch hand working for a rodeo, captures a magnificent wild horse that he tames and trains. As Ted is recovering from an accident that happened during a rodeo, the rodeo owner cheats him out of his horse. Ted must decide whether to pursue him and try to recover the horse, or whether to settle down with the doctor's daughter who is nursing him back to health. Written by Snow Leopard
Sunset Carson is trying to raise money for a new school and his partner Sam Webster is out to stop him. When Carson plans a benefit prize-fight, Webster plans to make off with the proceeds.
Manzanita Springs ia a combination small airline and spa and Vance Brados wants it. He pays their mechanic to have the planes run out of fuel so his men can rob the gold shipments and kill the pilots. After Sheriff Roy Rogers catches the mechanic, Roy plans one more gold shipment to get proof and this time his men will be ready. But it looks like Roy's plan will fail when Brados suspects a trap and call off the raid.
A gang of criminals, which includes a piano player and an imposing former convict known as 'Gruesome', has found out about a scientist's secret formula for a gas that temporarily paralyzes anyone who breathes it. When Gruesome accidentally inhales some of the gas and passes out, the police think he is dead and take him to the morgue, where he later revives and escapes. This puzzling incident attracts the interest of Dick Tracy, and when the criminals later use the gas to rob a bank, Tracy realizes that he must devote his entire attention to stopping them.
Marvin Hayden returns to find his ranch is about to be sold at auction and the Hayden Jorth feud still going strong. Carson wants the Hayden ranch and tries to kill Hayden. When he fails he kills Chick Jorth with a rock. As Hayden does not carry a gun and the two had argued earlier, Hayden is arrested for the murder. With Hayden in jail, his friends Chito, Ginger, and his Lawyer Gardner now go to work to find the murderer.
Gridley is mining silver from an old Mexican mine and bringing it into the USA thru a passage into his worthless mine. Border guard Rogers suspects Gridley and finally finds the secret entrance to the Mexican mine. He sends Lee Madison for help only to have her captured by Gridley. Trigger brings help that takes care of Gridley's men and now Roy has to rescue Madison.
Knowing the railroad is coming, Carter is after the rancher's land. Bob and Chito return just in time to save Banker Stockton and his money from Carter's men. When Stockton then lends the ranchers money, Carter has them burned out. Bob knows Carter is responsible and when Carter's henchman Saunders is recognized, Bob goes into action.
Notorious shootist and womanizer Quirt Evans' horse collapses as he passes a Quaker family's home. Quirt has been wounded, and the kindly family takes him in to nurse him back to health against the advice of others. The handsome Evans quickly attracts the affections of their beautiful daughter, Penelope. He develops an affection for the family and their faith, but his troubled past follows him.
In this Roy Rogers entry, featuring a song written by Oklahoma Governor Roy J. Turner (making him and Lousiania's Jimmie Davis and Texas' W.E. "Pappy" O'Daniel possibly the only state governors to write songs used in a western), Flying U ranch owner Sam Talbot is killed by a fall from a horse. St. Louis reporter Connie Edwards comes to check a rumor that he might have been murdered. She goes to Roy Rogers, editor of the local newspaper, and he takes her to the reading of Talbot's will. The ranch is left to Talbot's 12-year-old ward, Duke Lowery, much to the dismay of Talbot's niece, Jan Holloway. After some attempts on Duke's life, Roy finally proves that Jan, Steve McClory and coroner Jim Judnick had Talbot killed and are conspiring to do the same for Duke, making Jan the last heir.
Buster Crabbe and Johnny Weissmuller battle it out in Cajun country! Johnny, a riverboat pilot on the Mississippi, is seduced away from his fiance (Carol Thurston) by a rich outsider (Virginia Grey) who's nursed him back to health after a serious accident. She owns a large piece of the swamp and has outlawed hunting on her property. His rival Mike (Crabbe) is a trapper who harbors deep resentment for Johnny and his new wealthy friends. When he feels Johnny is responsible for the hunting ban, he resorts to destructive acts of vengeance.
Gabby doesn't want to breed his horse the Golden Sovereign with Roy's. When Sovereign and Roy's horse escape, the Sovereign gets shot accidentally by Skoville but Roy is blamed and jailed. A year later Roy returns with Trigger, the son of the Sovereign. When Skoville reveals he was present when the horse was shot, Roy sees an opportunity to clear his name.
A young outlaw gets involved with a gang of crooks. When he tells them he is breaking away, they threaten to pin a false murder charge on him. But he is rescued and reformed by his sister, and an undercover agent for the express company.
Roy Rogers rides to the rescue when a bank robber's orphaned son (Tommy Cook), who is living at a ranch for homeless boys run by Gabby Whittaker (George "Gabby" Hayes), attracts the attention his father's rowdy gang, who want to claim the boy's inheritance for themselves
Heading west for his health, Colonel Lambeth takes his daughter Rill along. Lost on the desert they are saved by Pecos and Chito. The Colonel hires the two and the Lambeths soon find themselves mixed up in Pecos' trouble. Pecos has killed Sawtelle's brother and Sawtelle as head of the vigilantes is after him.
Nick Condon, an American journalist in 20s Tokyo, publishes the Japanese master plan for world domination. Reaction from the understandably upset Japanese provides the action, but this is overshadowed by the propaganda of the time.