Life in Poland under the Nazis is a nightmare for the Balicki family. First, Joseph is sent to a prison camp. A year later, his wife, Margrit, is arrested by Nazi Storm Troopers and transported to Germany. The Balicki children — Ruth, Edek, and Bronia — are forced to leave their home and move into the cellar of a bombed house in Warsaw. Left on their own, the children rely on the kindness of others and their own resourcefulness to survive. One day, the children learn from a young boy that their father has escaped from prison and is waiting for them at their grandparents' house in Switzerland. Determined to see their parents again, Ruth, Edik, and Bronia, set out with their companion, Jan, on a long and dangerous journey across war-torn Europe.