Ella Muggins is a
Camberwell charwoman who is the widow of a
regimental sergeant major. One day during the
London Blitz, she relates to her friends a story about a "magic eye" charm that her husband obtained during his Army service in
India that protected him from all harm. Whilst cleaning her attic, she goes through her husband's effects and finds the charm that she absent-mindedly puts in the pocket of her skirt. During an air raid, she is caught in the middle of the street with a
delay-action bomb. One
air raid warden tells her to run, another to lie down. She does the latter and survives the explosion, and is helped to the shelter in a daze. As she recovers, she is convinced that her husband's "Magic Eye" charm has protected her. She asks a friend what she would do if she were totally invulnerable. Looking up to the street being bombed, her friend replies that she would go to Germany and "give that Mr. Hitler what for". Ella leaves the shelter, unconcerned about the bombs exploding around her, as she sets out to do just that.
Stowing away on a British merchant ship, Ella is discovered by the crew, who think having a woman aboard is bad luck; subsequently, a German bomber sinks the ship. Ella reaches France in a lifeboat, and hides as all the other survivors are quickly captured by the Germans. Ella works her way across France and Germany, pretending to be a
deaf-mute cleaning woman. She shares a train compartment with German Captain Franz Von Weber. Frederick Walthers arrives, and she is asked to leave the compartment but listens from outside. Both men are members of the anti-Hitler
German resistance. Walthers informs Franz that Grete, Franz's fiancée and Walthers' niece, has been arrested. Franz is determined to rescue her. Ella gets herself hired as a cleaner in the
Reich Chancellery when she convinces Lieutenant Bosch that she is deaf and dumb. Luckily for her, she sees Bosch's reflection when her back is turned to him and shows no reaction when he shoots his pistol to test her. She is working in Sturmfuehrer Dietrich's office when a British traitor, Herr Joyce or "Lord Haw" (based on
William Joyce, "
Lord Haw-Haw"), comes to complain about his treatment. Dietrich is unconcerned, as Joyce's usefulness is rapidly diminishing. On his way out, Joyce slips on a bar of soap Ella has purposely placed. Ella also overhears that Grete is being held in
Moabit Prison. When Franz tries to see Dietrich, Ella writes the message "Grete Mobit" on the floor. Noticing Ella's brush says "Champion: Made in England", Franz later hears the supposedly deaf and dumb woman singing in English, and realizes Ella is not who she seems. Outside, she lends him her Magic Eye to rescue Grete. Franz is able to have Greta released, but it is actually a ploy by Dietrich; he has the couple followed in hopes they will lead him to other members of the German Resistance. Inside Hitler's private office, Ella rehearses what she will say to him, but Dietrich is eavesdropping on the intercom. Lord Haw enters and begs Ella to help him escape from Germany. Both are arrested, as are Frederick, Franz and Grete. After Dietrich gives Ella back the eye, the
Royal Air Force bombs the Chancellery. Frederick is killed, but Ella, Franz and Grete take advantage of the confusion to escape to an airfield, where Franz steals a bomber. They fly to England and land by parachute. Feted as a heroine, Ella shows a reporter her husband's chest where she found the amulet, but discovers many more in a box labeled as
souvenirs of a glass blowers' exhibition. ==Cast==