Toni Hofer and brothers Vicki and Nicki Mahler are working on a new operetta. Toni's reputation with women equals his fame as composer, so they keep their sister Hedi away from him. Wanting to know him, she calls at his house in the middle of the night not revealing her identity, helps him write the main waltz theme and disappears, leaving him incapable of remembering his great...
A young woman, dressed as a boy to get a hotel job, helps a detective thwart a plot by three American crooks to rip off a German baron staying there.
About the booming of smuggling alcohol across the Baltic Sea between Estonia and the neighboring and alcohol prohibited Finland. Fiery love relationships are another theme.