Summer 1939. With Europe on the brink of war, eighteen-year-old Kristina Tomiak has been called up to join the White Eagles, Poland's valiant air force. When the Nazis reach the town where she is based, Kristina makes a daring escape, but she doesn't realise that she's carrying a stowaway in her plane. Will Kristina be able to navigate the most challenging flight of her life and reach safety amid the turmoil of war?