While watching from her train window, Nikki Collins witnesses a murder in a nearby building. When she alerts the police, they think she has read one too many mystery novels. She then enlists a popular mystery writer to help her solve the crime on her own, but her sleuthing attracts the attentions of suitors and killers.

Three young girls working in an agency have build a singing trio. They want to "lease" the Dictaphone of their boss to make a record of their singing, but they are caught and fired. When they are not able to pay their rent any longer, they decide to try it on an amateur contest at a radio station.

Sylvia is a French teacher at an all-girls school who wants to find love. When she hears Bill Williams on the radio, she decides to go visit and thank him. However, difficult problems lie ahead when Lili gets in the way.

A brash young singer and an unemployed "jukebox girl" hire an elderly Confederate "colonel" to teach them to be "southern" so they can land a radio gig for sponsor Plantation Coffee.

The Radio Rogues, salesman for a cure-all tonic called Nervoto, decide to go to Hollywood and cure invalids with mirth, melody and music instead of medicine.

As co-owners of a hotel, three young men decide upon a gimmick to drum up business--they do impressions of movie stars.

Determined to break into Hollywood and become movie stars, three young men crash a movie set and proceed to disrupt a temperamental director's big production.

Basically this is a commercial for Hollywood's Lido Lounge and for MGM contract players. The Lido is a large watering hole; we visit one afternoon with an orchestra playing, all sorts of stars and would-be stars sitting at tables near the pool alongside paying customers, and bathing beauties parading and diving. The Lido's manager, Reggy Denny, introduces the stars in the audience. He's sometimes interrupted by someone who does a bit, sings a song, or otherwise entertains: most of these are novelty acts. By the end, everyone's having a swell time.

A young singer hopes to become a success on Broadway.

Beverly Ross, the switchboard operator at a local radio station, jumps at the chance to be the DJ for an early morning show before the soldiers at a nearby army camp assemble for reveille. Beverly, with her modern music, camp bulletins and chatter, is a hit with the soldiers. Beverly's younger brother and his two buddies are soldiers at the camp. The buddies vie for Beverly's attentions.