When they are little girls, Cibi, Magda and Livia make a promise to their father - that they will stay together, no matter what. Years later, at just 15, Livia is ordered to Auschwitz by the Nazis. Cibi, only 19 herself, remembers their promise and follows Livia, determined to protect her sister, or die with her. Together, they fight to survive through unimaginable cruelty and hardship.