Stach is a wayward teen living in squalor on the outskirts of Nazi-occupied Warsaw. Guided by an avuncular Communist organizer, he is introduced to the underground resistance-and to the beautiful Dorota. Soon he is engaged in dangerous efforts to fight oppression and indignity, maturing as he assumes responsibility for others' lives.

Tadeusz Łomnickias Stanisław 'Bartek' Mazur
Urszula Modrzyńskaas Ewa 'Dorota'
Tadeusz Janczaras Jasio Krone
Janusz Paluszkiewiczas Sekuła
Ryszard Kotysas Jacek
Roman Polanskias Mundek
Ludwik Benoitas Grzesio
Zofia Czerwińskaas Barkeeper Lola
Zbigniew Cybulskias Kostek
Tadeusz Fijewskias German Guard in a Sawmill
Jerzy Lipman