When Neil Bennett, chief engineer for the American Broadcasting Corp., accidentally throws a switch and jams the police radio signal, a group of bank robbers led by Beau Gardner are able to escape. Minutes later, Gardner hitchhikes a ride with Neil and his assistant, Eddie House, and invites them to visit his nightclub. At the club, Neil immediately falls for the beautiful singer, Fay Stevens, although Gardner is openly jealous. Neil obtains an audition for Fay the next day, but studio manager J. J. Held does not like her, so Neil appeals to the sponsor of "The Murgatroyd Hour." Having learned about Neil's inadvertant aid in his escape, Gardner plans to jam studio signals of selected broadcasts, beginning with Fay's appearance on "The Murgatroyd Hour." Before Fay can go on, however, Held fires Neil, and Fay is banned from the studio. When Neil returns to his apartment, Gardner's men seize him and take his equipment. Gardner then frames Neil for jamming the broadcast and has Neil and his machinery moved to a house near his club. Gardner blackmails J. J. Held, and commercial sponsors threaten to switch to a rival broadcaster. Meanwhile, Neil has been sending coded signals to Eddie from the farmhouse. Eddie and Fay find and release Neil. Before they can escape, however, Gardner and his men capture them. The police have picked up Neil's S.O.S., and they arrive in time to stop Gardner and his gang from making off with the equipment. Later, Gardner is sentenced to Alcatraz, and Neil and Fay go on a honeymoon.