Number the Stars tells the story of Annemarie Johansen, a ten-year-old girl living in Denmark during the Nazi Occupation. Annemarie's Jewish friend Ellen comes to live with the Johansens after the Nazis begin persecuting Danish Jews, impersonating Annemarie's deceased sister so that she will not be discovered. Until the end of the war, Annemarie and her family work to help Ellen and other Jews. Annemarie's story is one of courage in the face of impossible odds, and of doing the right thing even when its against the law.