Adaptation of Aleksander Kamiński cult 1943 book with the same title which describes acts of sabotage carried out by members of the Polish underground movement ‘Szare Szeregi’ (Gray Ranks).

A true story of bravery, honour, patriotism and friendship. A group of three scouts known as The Gray Ranks, set aside their dreams and hopes for the future to rescue their tortured comrade from the clutches of the Gestapo. With no experience or weapons, the young idealists were described as being “like stones thrown by God upon a great rampart.” Juliusz Słowacki.