Musical comedy. An opera singer falls for a stowaway on the way to Monte Carlo

In this opera-oriented musical, Riccardo Gatti, an Italian young tenor in Venice, meets a young woman who sneaks into the opera house to try and get her fiancé hired as the orchestra's pianist.

Elaine Bradford is a young singer and dancer, looking for her big break. Peter Carlton is a gossip columnist facing a deadline and a blank page. So, Peter invents "Mrs. Smythe-Smythe", a mysterious Englishwoman who spends her days hunting tigers in India, jumping out of airplanes, and generally driving men mad with her beauty. Since no one in London has ever seen Mrs. Smythe-Smythe, Elaine decides to impersonate the lady, in hopes that the publicity will land her the big break she's been looking for.

Harriet Green, a beloved and radiant music hall star of the Edwardian era, mysteriously disappears on the eve of her wedding. Years later, she reappears on the stage as young looking and beautiful as ever.