1942, Krakow. Sadie and her parents are cramped into a ghetto, still hoping that they will be spared the terrible fate prepared for people like them. With the arrival of the German occupiers, every day turns into a test—a tense struggle for survival. But when the Nazis carry out another bloody massacre of the Jewish population, it becomes clear: there’s no place left to hide from the escalating arbitrariness and cruelty.
Sadie and her pregnant mother have to search for shelter in tunnels under the city—in dark, damp catacombs. One day, the girl watches the bustling life of the city through a sewer grate; it seems the city hasn’t even noticed their absence. And she sees someone her own age buying flowers. Ella is a Pole who goes on living the way she’s always lived, as if the world isn’t engulfed by war. Feeling watched, Ella looks closer and distinguishes Sadie in the gloom of the “underground.” Ella immediately understands that, in these circumstances, it is safer for Sadie to stay in the shadows.
She starts helping Sadie, and the girls gradually grow closer—but, unfortunately, given the circumstances, this friendship may cost each of them her life…