When he is not conducting his orchestra, a talented young man invents a device to thwart car thieves.Associating himself with a rich Dutch baron, he falls in love with the baron's daughter.
A western woman falls in love with a chinese prince. When she accompanies him to his homeland, strange things await her. Based on the operetta of the same name with music by Franz Lehár and libretto by Ludwig Herzer and Fritz Löhner-Beda.