Franz Huber (Ludwig Donath), an Austrian actor known for his impersonations of celebrities, is captured by the Gestapo and forced to undergo plastic surgery to become a stand-in for Adolf Hitler. The conspirators are planning to poison Hitler and put Huber in his place - and under their control. Huber, who is a good anti-Nazi is able to foil the Gestapo and strike a blow for democracy but his personal life is put in jeopardy because his wife (Gale Sondergaard), who is also an anti-Nazi, doesn't know that her missing husband has become a Hitler look-alike.