This story takes place in the city of Breslau-Wroclaw in three time periods at once - in the thirties and forties of the twentieth century, immediately after the war and today. Kripo (criminal police) officers Albert Grunewald and his colleague Richard Kuger were the first to investigate the case. After the war, people's militia officers Mishchuk and Vasyak tried to bring the investigation of this case to an end. Sixty years later, the best detective in Wroclaw, Slawek Staszewski, takes on the case. Will one of the greatest mysteries of Breslau-Wroclaw be solved - the mystery of people suddenly exploding...