In Vienna, a new jazz club featuring American trumpeter Buzzy Bellew threatens the existence of its neighbor, the Waltz Palace, run by Franz Strauss and featuring his granddaughter, singer Elsa. Smitten by Elsa, Buzzy hides his identity and association with the club -- whose owner intends to buy out the Palace property. When Elsa accidentally learns who Buzzy really is, it appears he may have to return to America alone.

Theater manager James Guthrie's (Melvyn Douglas) career depends on famed soprano Elsa Terry (Grace Moore) singing in his Buenos Aires opera house, however, Elsa breaks the contract in favor of a more lucrative deal in Paris. Desperate, James begins showering her with flowers and candy in an attempt to woo her to the Argentinian opera house. When Elsa overhears James confess to his friend Pancho that he'd be willing to resort to kidnapping to get Elsa to Argentina, she mistakenly believes his motives to be solely romantic.

Jack Haley plays Jack North, the nether end of a vaudeville horse act who inherits a western ranch. When he heads to the Great Outdoors to take possession, Jack winds up at the wrong place: a swanky dude ranch. He immediately begins running things, at it's quite a while before his error is discovered. By the time he shows up at his own ranch, he's up to his ears in unpaid debts-which naturally requires a fund-raising musical show as a bail-out. Harriet Hilliard handles the romantic portion of the proceedings, occasionally dueting with her real-life husband, bandleader Ozzie Nelson.

The employees of a failing radio station must put on a huge ratings winner to have any chance of continued operation.