It is Paris 1939. Twenty-eight-year-old Eva Delctorskaya is at the funeral of her murdered younger brother when she notices a stranger standing among her family and friends. A patrician-looking Englishman with a secretive air and a persuasive manner, his name is Lucas Romer, and it turns out he has a mysterious connection to her brother. Romer recruits Eva and soon she is travelling to Scotland to be trained as a spy and work for his underground network. After a successful covert operation in Belgium, she is sent to New York City, where she is involved in manipulating the press in order to shift American public sentiment toward getting involved in WWII.