Maria and Karl Lang are the singing duo of Vienna. Maria is very flirtatious and Karl very jealous. Karl decides to masquerade as a Russian guardsman and attempts to make Maria flirt with him – to test her loyalty to him – as the Russian, Karl makes a vigorous attempt to seduce Maria. For a moment she accepts then rejects. Karl is left in turmoil…
Stars
Nelson Eddy
Risë Stevens
Nigel Bruce
Florence Bates
Dorothy Raye
Nydia Westman
Max Barwyn
Charles Judels
Roy Del Ruth