When he is told that he is to spend three more years as a tailgunner, goofball GI Herbert Pumice thinks that a promotion--which he has little to no chance of getting--will get him out of the job he hates. He asks his girlfriend Sally, who owns the base café, for help. She goes to the base commander, Col. Baker--who she knows has a crush on her--to help out Herbert. Col. Baker schedules a promotion hearing for Herbert that Friday. He naturally fails it miserably, and then learns that Col. Baker is going out on a date with Sally. Meanwhile, the base military intelligence officer discovers that Herbert is a dead-ringer for the head of a spy ring intending to sabotage a new automated plane, and gets Herbert assigned to infiltrate the gang. Complications ensue.

Gerald Meek and Myrna McAllister go to city hall to apply for a marriage license. Gerald wanders into the Marine Recruiting office by mistake and Sergeant Delaney signs him into the Marine Corps and sends him for a medical examination before Gerald realizes what has happened. He finds himself in uniform and ready to be shipped to boot camp without any delay, other than explain to his intended-bride that Uncle Sam has other plans for him.

Lee Garvin has eloped with the daughter of a railroad man who didn't approve of the marriage. Hoppy steps in when the young man is framed for murder.

Also released as Montana Mike, Heaven Only Knows is an offbeat western with fantasy overtones. Hard-bitten gambling boss Brian Donlevy rules his frontier community with brawn and bullets. To his dismay, Donlevy discovers that he has a guardian angel (Robert Cummings), who shows up in the guise of an Eastern tenderfoot. The angel has been sent from Above to save Donlevy's soul, and to that end encourages the one-time villain to squire a minister's daughter (Jorja Curtwright) rather than his usual dance-hall girls. Donlevy is also given tips on winning against his enemies without resorting to gunplay. The gambler finally redeems himself with Heaven by rescuing the angel from a lynch mob (how can you lynch an angel?) Heaven Only Knows deserves an "E" for Effort for bringing a fresh twist to the venerable western genre.