Christine Collins is overjoyed when her kidnapped son is brought back home. But when Christine suspects that the boy returned to her isn't her child, the police captain has her committed to an asylum.

At the dawn of the space-race, two radio-obsessed teens discover a strange frequency over the airwaves in what becomes the most important night of their lives and in the history of their small town.

Ruth Raymond works on the telephone switchboard of a large NYC office building. One day, a private detective informs her that she is actually the daughter of railroad tycoon Luke Carson, and that she had been kidnapped as a baby 14 years ago by Luke's vindictive brother Elwood, and placed with strangers.

Two telephone repairmen have many adventures and romance a pair of blondes.

Telephone operator Kitty O'Brien can't help but get involved in the problems of her customers. Right now she is concerning herself with the well-being of Tom Blake, the honest son of crooked political boss Jim Blake.