The night that Rachel and Toby's parents are taken away by the Nazis, they give their eldest daughter three gold coins. They also ask her to promise that no matter what she and her sister will always stay together. The girls are sent to the Auschwitz concentration camp, where their lives are in constant danger. Sisters and best friends they share memories, fears and hope. But when Rachel becomes sick the girls are separated. Toby must risk her life to use the well-hidden gold coins to rescue her little sister. A true story