A PROMISE TO MY FATHER follows Israel "Izzy" Arbeiter as he returns to the sites of his darkest hours and relives the Holocaust's unimaginable horrors. Arbeiter’s incredible story of survival unfolds in Nazi-occupied Poland, where the teenager lived with his family in the Jewish ghetto of Starachowice. Following his separation from his family, he endured life as a slave laborer in a German armaments factory and later, in numerous concentration camps throughout Europe, including the infamous Auschwitz-Birkenau. With his grandson in tow, Izzy travels to Treblinka, Auschwitz and Stuttof, and various Holocaust memorials, with the hope of bringing closure to this painful chapter of his life. He also visits his childhood home, now condemned, in the Polish city of Plock. Cameras follow the 87-year-old into the basement of the home, where he attempts to unearth family heirlooms hidden for decades.