In 1947, pregnant American college student Charlie St. Clair is looking for her cousin Rose, who disappeared in Nazi-occupied France years earlier. Her search leads her to Eve Gardiner, a disgraced former spy who was part of the real-life Alice Network, a group of female agents who risked their lives during WWI. The two women embark on a journey that forces Eve to confront the ghosts of her past and ultimately leads Charlie to the truth about her cousin. The story weaves together these two timelines in a thrilling tale of courage, espionage, and the bonds between women.