One week before Easter of 1943 the Uprising in the Warsaw Ghetto is on its way. A young Jewish girl Irena is hiding at her friend's house. One day she is caught by the Gestapo and after bribing them to let her go, the girl wanders around Warsaw not knowing where to go or what to do. Then she meets Jan, a former fiance of hers. The man takes her to his house where she meets his pregnant wife Anna. The couple decides to help the poor girl. Everything is going well, however, one of the neighbours, driven by fear and jealousy decides to denounce Irena to the Germans. The story presents the drama of people's moral behaviour under extreme conditions in the reality of holocaust. We find here a mix of selfless kindness and support as well as extreme baseness and cruelty.