In 1940, Jewish orphan Sarah Goldstein takes the identity of Ursula Haller and spies on Nazi generals during high-society cocktail parties in Berlin. Then she gets the chance to go to Central Africa with her handler, the Captain, to find a German doctor whose germ warfare weapon called "the Bleeding" could destroy entire cities. They are joined on their dangerous mission by a girl named Clementine who forces Sarah to face the truth and guilt of her own allies.