Based on a well-known Polish novel with the same title the movie re-tells a true life story of a group of scouts called ''Szare Szeregi'' (Gray Ranks) during the Nazi occupation of Warsaw and the liberation of one of its members (imprisoned and tortured by the Germans) through a maverick military action in board daylight right under the enemy's nose known ''Action at the Arsenal'' which was the biggest single feat of the sort undertaken by a youth resistance organisation in all of occupied Europe during WWII.
Marcel Sabat....Tadeusz Zawadzki 'Zoska'
Kamil Szeptycki....Maciej Aleksy Dawidowski 'Alek'
Sandra Staniszewska....Hala Glinska
Wojciech Zielinski....Stanislaw Broniewski 'Stefan Orsza'
Andrzej Chyra....Jan Kiwerski
Krzysztof Globisz....Józef Zawadzki - Zoska's father
Danuta Stenka....Zdzislawa Bytnarowa - Mother of 'Rudy'
Artur Zmijewski....Stanislaw Bytnar - Father of 'Rudy'
Olgierd Lukaszewicz....Dr. Trojanowski
Wolfgang Boos....Rottenführer Ewald Lange
Hans Heiko Raulin....Oberscharführer Herbert Schutlz
Filmography links and data courtesy of The Internet Movie Database.