Henny Brown, talent scout for the Margaret Ames Film Agency in Hollywood, mistakes Broadway show understudies Judy and Marian, for stars Betty and Eileen, and signs them up for movies. Margaret, furious with Henny for the blunder, fires him---but only temporarily. Another agent, Marty Allen, once married to and still in love with Margaret, signs Betty and Eileen. Henny arrives with Judy and Marian, and the nightclub manager asks Henny to emcee the show. Though he is not sure himself what they can do, Henny introduces the girls and they make a hit in a dramatic sketch. Big-time movie producer R. J. signs them to a film contract. Judy joins the WAVES, Marian the WACS and Marty the Marines and all have two weeks before induction, and that is more than long enough to shoot a Monogram musical-within-a-Monogram musical and have a few days to spare.

Trouble-prone Billy Peck and his gang descend on a traveling circus that has just hit town, and before long their antics are causing the circus owner all kinds of problems.

The East Side Kids find a young girl in the apartment of a man who has just been murdered. Believing her to be innocent, they hide her in their clubhouse while they try to find the real killer. The killer, however, used a baseball bat as his murder weapon, and the bat has the fingerprints of one of the gang on it.

Jo March and her husband Professor Bhaer operate the Plumfield School for poor boys. When Dan, a tough street kid, comes to the school, he wins Jo's heart despite his hard edge, and she defends him when he is falsely accused. Dan's foster father, Major Burdle, is a swindler in cahoots with another crook called Willie the Fox. When the Plumfield School becomes in danger of foreclosure, the two con men cook up a scheme to save the home.

Two ghosts, who were mistakenly branded as traitors during the Revolutionary War, return to 20th century New England to retrieve a letter from George Washington which would prove their innocence.

When a gambler is accused of murder, the pretty orphanage employee he loves sets out to prove him innocent of the crime.

Postal inspectors track down money stolen from a railroad car.

Two bumbling plumbers are hired by a socialite to fix a leak. A case of mistaken identity gets the pair an invitation to a fancy party and an entree into high society. As expected, things don't go too smoothly.

Humanity finds a mysterious object buried beneath the lunar surface and sets off to find its origins with the help of HAL 9000, the world's most advanced super computer.