Romance of an absent minded designer of planes and a famous singer to whom he tries to sell his friends' songs.
During the Austro Hungarian empire, a girl substitutes for her brother in a military academy.
Paul loves actresses but avoids to get hitched. Businesswoman Katja manages to get a singing part on stage, this way attracting him to her. Deli employee Franz is mistaken for an actor and gets a leading part - with disastrous results.
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.