A Hollywood actor visits a mythical country where he looks like the king and confuses the queen.

Carl Brisson
as King Rudolf XIV / Carlo Rocco

Mary Ellis
as Elaine, the Queen of Langenstein

Edward Everett Horton
as Count Josef 'Peppi' von Schlapstaat

Katherine DeMille
as Fraülein Mimi

Eugene Pallette
as Conrad Q. Conley

Arnold Korff
as Baron Kraemer, Lord Chamberlain

Marina Koshetz
as Steffi

Rosita
as Ilonka

Stanley Andrews
as Count Batthy

Jane Wyman
as Chorine on Train (uncredited)
CinemaSerf
If you can imagine a “Prisoner of Zenda” with musical numbers, then you’re halfway there with this rather mixed up hybrid. We even have another “Rudolph” (Carl Brisson) who has been neglecting his queen (Mary Ellis), so she absconds from their palace telling him she shall only return once he mended ...