The Second World War. A group of Royal Air Force officers led by William Ash (Jakub Reizer) is staying in Oflag XXI B, located in Szubin (Poland). The prisoners decide to organize a diversionary action, which is to be a daring escape through a tunnel, named after the main originator - the Asselin tunnel. They are helped in their activities by the Polish resistance movement, which includes a young photographer, Henryk Szalczyński (Michał Matela), who develops photos for forged documents.
Jakub Reizer
as William Ash
Mateusz Jabczanik
as Eddy Asselin
Michał Dybowski
as Robert Kee
Hubert Jaśtak
as Tommy Calnan
Patryk Czerwiński
as Paddy Barthropp
Hubert Czajka
as Wilfred Wise