This is the remarkable true story of 19-year-old Polish nurse Irena Gut Opdyke and her unfathomable courage as she risked her own life to save a dozen Jewish workers in the basement of a Nazi officer’s house.

Warsaw, 1939: when the Nazis invade Poland, Irena is forced to work in support of the German war effort, first in a factory before being assigned to run the home of a Nazi commandant. Despite being witness to unspeakable atrocities, Irena’s spirit remains unbroken. She makes a silent vow to protect her Jewish factory colleagues from certain death, sheltering them under her boss’ nose. Over the course of two harrowing years, Irena’s vow is tested as she musters all her determination, courage and wit to keep her friends safe.