A mad scientist creates a formula that turns regular bats into giant, killer bats. He uses these bats to seek revenge on his enemies, including a newspaper reporter who is trying to expose his crimes.

Ann Fenwick is a witness to a bank robbery in the U.S. and the bandits, led by Trigger and Leon capture her and when she disappears, a warrant is issued for her arrest as a material witness. The bank robbers flee across the border into Canada where they steal a trailer in which they lock Ann and the loot. The hitch breaks and the trailer plunges into a lake. Sergeant Renfrew and Constable Kelly, of the Canadian Mounties, rescue Ann and she tells them she is a hitch-hiking tourist and gives a false name. Renfrew sends Kelly for aid, Ann escapes and Kelly returns with the news that she is wanted. The leader of the gang, Cardigan, sends the gang back for Ann and the loot, which Ann has hidden in a trappers cabin, just before Trigger recaptures her. Renfrew goes to her rescue, but is also captured. But reliable Constable Kelly is somewhere in the woods.

Both Indians and cowboys are after a beautiful stallion, the leader of a pack of wild horses.

Tell Your Children tells the story of a group of young people who get involved with drugs and the tragic consequences that follow. The film highlights the negative effects of marijuana and portrays it as a gateway drug leading to addiction, hallucinations, and reckless behavior. It serves as a propaganda film to discourage drug use.

Rangers Tex Haines and Dave Wyatt track a killer known as the Whispering Skull. In the wake of the Skull's slaughter, a band of thieves takes advantage of the fear he's brought to town.

A theatre critic teams up with a cop to investigate the murder of a Broadway actor.

In Bowery at Midnight, a college professor named Geoffrey leads a secret life as a masked crime boss in the Bowery area of New York City. He uses his position at the college to recruit students for his criminal activities. Meanwhile, a criminologist named Terry investigates Geoffrey's activities and tries to bring him down. As the plot unfolds, viewers are taken on a thrilling journey filled with deception, romantic rivalry, drug addiction, and murder.

Dry Gulch Trading Post owner Kurt Fabian advances money on mortgages to the local settlers to finance an irrigation program. Rangers Tex Wyatt, Jim Steele and Panhandle Perkins transport the money in a strong box which they place in the Wells Fargo safe as Agent Sam Benson assures them that he is the only one who knows the safe combination.

A cowboy goes after a gang of stagecoach robbers who murdered his brother.

Billy and his pals, on the run from the law again, travel to Sage Valley where Billy is made Sheriff. The local outlaw gang is run by Kansas Ed who closely resembles Billy. Ed captures Billy and changing clothes with him, now plans to run the town as Sheriff.

The evil and masked "Gargoyle" is sabotaging all of America's industrial plants. It is up to the Spider to save the country.

In Flying Wild (1941), a group of young heroes known as the East Side Kids stumble upon a spy plot while dealing with their usual antics and misadventures. They must use their wit and heroism to uncover the enemy's plans and save the day.

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.

In this Pete Smith Specialty short, a series of vignettes illustrate some ways that mothers-in-law irritate, and/or cause problems for, their son-in-law.

Texas Ranger O'Brien has an outlaw twin brother. When his sibling is killed, O'Brien assumes his identity in order to infiltrate a gang of stagecoach robbers.

A girl disguised as a boy listens to conversations using a listening device and gets involved in a murder investigation, leading to a frame-up and an attempted robbery. The East Side Kids try to solve the case and clear their names.

Filmmaker Pete Smith is very protective of the trophies and other mementos associated with his films that are located in his office at the studio, but knows that Joe Funk, the studio custodian who cleans his office, is the one who is always fussing around with those mementos. As Joe fiddles around with those mementos on this specific occasion, Pete recalls the films and incidents associated with those items, most which are related to sporting events.

"The Rough Riders", has U. S. Marshals Buck Roberts (Buck Jones) and Tim McCall (Tim McCoy) coming to a Texas town to visit their friend, U. S. Marshal Sandy Hopkins (Raymond Hatton), only to learn that he has disappeared, and is suspected of the murder of John Dodge (Jack Daley), owner of practically the whole town, except the hotel Sandy owns and runs when he isn't on an assignment as a Marshal. The murder has been committed by the henchmen of Bart Logan (Harry Woods), who intends to take over the dead man's property and whose men are holding Sandy prisoner to make it appear that he fled after arguing with and killing Dodge. Just before the murder, Logan sent a letter to Dodge with the news that the latter's long-missing wife is returning, and in a short while, Stella (Lois Austin), a Logan accomplice, arrives posing as the missing Ann Dodge, thus establishing her right to the Dodge property. Sandy, allowed to escape, returns ... Written by Les Adams

Millionaire Larry Duane is posing as his own chauffeur while touring the West and meets Molly Hennessey. They have a small romance until it is ended when her father strikes oil and moves his family east to satistify his wife's social aspirations. Larry also return east to close his estate for the summer, but stays on, still posing as the chauffeur, when he learns that Molly's family is renting the place.

This Pete Smith Specialty short shows, humorously, the disastrous results when people save their money in unsafe places.