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.

Hipis’ gang gives Oskar one last chance to stay alive. He has to pull off a big deal to buy his way out of their hands. It was supposed to be a quick job — but it turns out his partner is a complete lunatic.