A Russian lady singer in Germany falls for a countryman working in a car factory there, who unknown to her is really a grand Duke. an attempt to steal the famous Orloff diamond adds to the complications.
The stand-alone opera singer Carmen Casini dare not admit to her adult son, the spoiled race car driver Cecil, that she ruined her voice on a stormy day at the racetrack and that her career is thus at an end. Meanwhile, Cecil has fallen in love with the pretty Colette … without suspecting that...