Captain Benoît manages to take possession of the plans of a new German airplane. The German counter-espionage assigns one of their agents, beautiful Erna Fiedler, to seduce Benoît and to eliminate him. But the two spies fall in love.
Capitaine Benoit
Erna Flieder, spy
Weygelmann
Dorothee
Lieutenant Van Strammer
Schaffingen
Acting
Innkeeper
An Old Stranger
Count Brusilot