US cavalry officer James Laurence (Nelson Eddy) arrives at one of the Russian colonies to pave the way for the eventual American takeover of the territory. He faces resistance in the form of Prince Nikolai Balinin (Hugo Haas), who has no intention of weakening his despotic hold over the local peasants. The plot thickens when Laurence falls in love with Natalie Alanova (Ilona Massey), the wife of disgraced nobleman Count Igor Savin (Joseph Schildkraut).
Nelson Eddy
as Captain Jim Laurence
Ilona Massey
as Natalia Alanova
Joseph Schildkraut
as Count Igor Savin
Elsa Lanchester
as Princess 'Tanya' Tatiana
Hugo Haas
as Prince Nickolai Balinin
Lenore Ulric
as Baroness Kruposny
Peter Whitney
as Volkoff Overseer
Tamara Shayne
as Olga Natalia's Maid
Ernö Verebes
as Kyril Balinin's Aide
George Sorel
as Baron Kruposny
Rick Vallin
as Dovkin
