Band leader Skip Houston is popular with everyone except Chicago dancer Bonnie Hayden. She resents the fact that he gets top billing over her even when he is only in town for one day, and to make matters worse, she does not like his music. Publicist Barney Cowan, who is always coming up with crazy publicity stunts, suggests that Skip marry Bonnie to surprise all the people who know they hate one another. Soon after Skip leaves Chicago, Bonnie's agent, Ten Percent Nelson, gets a telegram requesting her talents for a Broadway show. Ten Percent implies that this offer came because of his efforts on her behalf, but actually it was Skip who suggested her. Not realizing this, Bonnie continues her sarcastic exchange with Skip. Just before the show opens, Barney pays chorus girl Lulu Betts to jump in a lake, pretending she is broken-hearted because Skip does not love her. The stunt ends when Lulu's gangster brother, Dopey Malone, insists that someone must marry Lulu, and thus Barney acquires a wife. Unfortunately, the stunt proves to be the last straw for the show's nervous producer, who closes it before it opens. Ten Percent insists that he can find Bonnie work in New York. He talks her into an audition for a radio show sponsored by Selzer Cigars. The Selzer brothers tell Bonnie that they have already signed Skip, and if he approves her, she will get the job. To her surprise, Skip agrees, and the two are billed as the Sweethearts of the Air. After the first show, Bonnie thanks Skip for hiring her and they decide to be friends. Soon Ten Percent has reason to be jealous of Skip because he and Bonnie fall in love. Although Skip has asked the newspaper columnists to be kind to Bonnie, the radio audience does not like her singing, and despite Skip's pleading, the Selzers fire her and replace her with Helen Morgan. Seeing his opportunity, Ten Percent tells Bonnie that Skip wants to fire her and proves his point by taking her to the studio where Skip is rehearsing with Helen. Bonnie does not believe Skip when he protests that he tried to keep her on the show and breaks up with him. Finally Ten Percent manages to get Bonnie an audition for a radio comedy program. When her reading partner does not show up, Ten Percent drags Barney in to read with her. The impromptu comments between Barney, Lulu and Ten Percent, played against Bonnie's straight reading, get all four of them the job and they are very popular. Then another of Barney's publicity stunts results in his breaking his jaw. The program is temporarily taken off the air and Bonnie dances at a benefit performance. There she learns the truth about her firing, and after she is reconciled with Skip, they plan to wed. Because he is going to lose his only client, Ten Percent takes on Dopey, who has always had a desire to be a crooner.