At the end of World War Two, as Hungary is finally being relieved of its 500,000 Jews, a young girl survives the gas chambers at Auschwitz. The Sonderkommando—the coterie of Jews the Germans use to keep the liquidation process running smoothly (for four months, after which time they are murdered and replaced)—find themselves saddled with an “unnumbered” problem. Raw and a-filmic, The Grey Zone is based on a true story.