Paris, 1941. At the height of World War II, young and headstrong Josephine Portier is the protégé of a wealthy family in the highest echelons of Paris society. When she meets the arrogant but handsome Gabriel, she wants nothing to do with him--until he reveals a shocking secret about her adoptive family that puts her in grave danger.
With her life turned upside down and the Nazi forces ever advancing, Josephine finds a new calling when she joins the underground French Resistance. Her dislike for Gabriel soon flourishes into love, but their romance is short-lived as she sacrifices her own freedom to allow his escape.
Alone, she must brave the secret missions and Gestapo interrogations of a 1940s Parisian resistance girl. In a city ravaged by war, Josephine is drawn into a dangerous game of survival, in which losing is simply not an option.