Paris, 1939. Hollywood actress Drue Leyton, married to Frenchman Jacques Tartière, lives as an expatriate in love. But when her husband is dispatched to Brittany to work as a liaison for the British military, Drue finds herself alone with her housekeeper. With her career and fame 4,500 miles away, she accepts an opportunity that will change her life forever. Befriended by seasoned wartime journalist Dorothy Thompson and urged on by political operative Jean Fraysse, Drue broadcasts radio programs to the United States. Her duty: shake America from its apathy and, as Nazis encroach and France is occupied, push for resistance and help from the US. As Drue and Jean fall under suspicion, Hitler sends his own message: when Drue’s adopted country is conquered, she will be executed.