It was in Poland in the winter of 1945 a young girl named Mathilde Beaulieu (starring Lou de Laage) to work for the French branch of the Red Cross organization. They were on a mission of search and treatment of French citizens who survived the camps in Germany.
Once, a nurse / nun from Poland, arrived at the hospital. If the situation is very alarming, he begged Mathilde to go with him to enter the convent. Life and beliefs Mathilde began to change when he saw that the pregnancy has affected a number of sisters were not far from the hospital where she worked.