Twelve-year-old Lidia's life is forever changed by the Nazi occupation of Poland, leading her to join the resistance movement to fight against the Nazis and aid Jewish people in the Warsaw Ghetto during WWII.

"1942. Sadie Gault is eighteen and living with her parents in the Kraków Ghetto during World War II. When the Nazis liquidate the ghetto, Sadie and her pregnant mother are forced to seek refuge in the perilous tunnels beneath the city. One day she sees a girl about her own age buying flowers. Ella Stepanek is an affluent Polish girl living a life of relative ease with her stepmother, who has developed close alliances with the occupying Germans. Ella...

"In the spring of 1942, young Elzbieta Rabinek is aware of the swiftly growing discord just beyond the courtyard of her comfortable Warsaw home. She has no fondness for the Germans who patrol her streets and impose their curfews, but has never given much thought to what goes on behind the walls that contain her Jewish neighbors. She knows all too well about German brutality--and that it's the reason she must conceal her true identity. But in befriending...

In a Jewish ghetto, Max Rosen and his sister, Zena, struggle to live after their father is taken away by the Nazis. With barely enough food to survive, the siblings make a daring escape from Nazi soldiers into the nearby forest. Max and Zena are brought to a safe camp by Jewish resistance fighters. But soon, bombs are falling all around them. Can Max and Zena survive the fallout of the Nazi invasion?