In 1910 Estanza an adventurous Greek girl of 18, with a deep interest in German, classic literature is lured to Berlin by a highly placed German diplomat who loves her. Konrad joins her in Berlin and they consummate their forbidden love. Their daughter, Konstanza, whom Konrad refuses to acknowledge, is born in Switzerland. At eight years old, Konstanza is sent to a prestigious German boarding school where she learns about the brutality that lurks beneath the veneer of German culture. After her parents are murdered by the type of thugs who soon will rule Germany, Konstanza travels to Poland, to work for a loving Jewish family.

When Poland is occupied by Germany, the family is ripped apart and Konstanza is forced to become a housekeeper for a unit of German officers. Risking her life on a daily basis, Konstanza becomes instrumental in a plan to save Jewish children from certain death. They Will Not Be Forgotten reveals inconceivable cruelty by a population gone criminally insane and memorializes the brave people who have the courage to resist evil.