The film tells the true story of a 13-year-old Polish Jew girl whose entire family was killed by Nazis in September of 1942. After a grueling escape to the Ukrainian countryside, Sara steals her Christian best friend's identity and finds refuge in a small village where she is taken in by a farmer and his young wife. She soon discovers the dark secrets of her employers' marriage, and she will have to strive to protect her secret, her true Jewish identity.