Rhythm of the Islands is set in the South Seas, presumably far away from the shooting war. The nonsensical plotline finds hero Tommy (Allan Jones) posing as a native chief. Joan Holton (Jane Frazee), daughter of a millionaire (Ernest Truex), falls in love with Tommy, unaware that he's a charlatan.

By popular consensus, Allan Jones' best Universal mini-musical of the 1940s was the timely When Johnny Comes Marching Home. Jones is cast as war hero Johnny Kovacs, who wearies of the adulation heaped upon him and takes refuge under an assumed name in a theatrical boarding house. Here he befriends orchestra leader Phil Spitalny and his all-girl aggregation, including the inimitable Evelyn and Her Magic Violin. When Army officials trace Johnny to the boarding house, his new friends assume that he's a deserter and try to convince him to return to duty.

Orphan prodigy singer runs away from her oppressive aunt and tricks a rural couple into adopting her.

San Antonio Rose is an amiably wacky mini-musical evenly divided between its "official" stars, The Merry Macs, and a strong cast of supporting clowns. Robert Paige plays roadhouse operator Con Conway, whose establishment is in danger of being squeezed out by its competition. Stranded entertainers Hope Holloway (Jane Frazee) and Gabby Trent (Eve Arden) decide to revivify Conway's establishment by staging an energetic floor show built around the talented Merry Macs. A rival club owner dispatches his two top hooligans Jigsaw Kennedy (Lon Chaney Jr.) and Benny the Bounce (Shemp Howard) to wreck Conway's club by posing as waiters, but the two stupes are easily cowed into submission--by the leading ladies!

J. P. Courtney wants to update the music on the radio program he sponsors, but his wife, Agatha Courtney, is the final authority and addicted to the classics and won't allow him to replace Professor Bistell and his symphonic orchestra. Conspiring with his daughter Sue and her friends, Marvo the Great, the Andrews Sisters, Anne Payne and bandleader Woody Herman, they devise a sabotage plot that gets rid of Professor Bistell, and a new sound is soon heard on the program.

Theatrical agent Waldo Main is inducted into the army, and turns his now clientless agency over to his secretary Dottie Duncan. Dottie decides to organize an all-girl orchestra to fill the void caused by so many orchestra members being called to service due to WWII, and joins struggling singers/songwriters Sally Richards and Sue Ford in this endeavor. Dottie's screwball schemes to get engagements for the group often lead to disaster.

Sintown is just a deserted ghost town until Vanerpool starts looking for silver. Cookie and Roy's partners put $20,000 into the business only to find that the mine is worthless and Vanerpool is bankrupt. Carol comes out to look for silver to save the company, but does not know that their engineer, named Regan, is crooked and wants all the silver for himself. But only Old Ed knows where the mother lode is located.

Having been falsely court marshaled for cowardice and sentenced to prison by the Army, Jed Kilton escapes and heads to Nevada Springs to see his kid brother. There he meets his old school friend Sam Ballou. But the two old friends soon find themselves on opposite sides and Sam has Jed arrested. Then when Jed's young brother sees one of Sam's men kill another man, the boy becomes Sam's intended victim.

Deciding to quit his singing act and become a tourist guide, Pete Fleming escorts wealthy Mrs. Floto and her three nieces to Hawaii for a vacation. Behind his back, Pete's three bandmates stowaway and tag along.

Elmer Whippet inherits the Whippet Pickles company and sets out to meet the two stars, Mary Reynolds and John Stowe, of the radio program sponsored by his company, as he thinks their on-air quarreling is real. Two former associates, Jules Kinsey and J.M. Snow cross him up by substituting Susan Blair, an office secretary, for Mary and Elmer thinks the show's writer Paul Stevens is John.

Jean Loring has her men illegally killing and selling game. Roy suspects her and gets himself invited to stay at her ranch. Investigating he finds the freezer where the slaughtered game are kept. But he is caught, tied up, and left to freeze.

On vacation at his ranch, western actor Roy quickly finds himself involved with a horse rustling operation and a boy ward of one of the rustlers, leading to the kidnapping of Roy's trick horse Trigger by the gang with a demand for ransom.

An innocent man -- due to a case of mistaken identity -- is beaten. Once recovered, the stockbroker tries to find the actual intended target -- a gangster-- and warn him.

A cowboy must clear himself of a murder he did not commit.