Poland 1946. Militia looks for commander of anticommunist partisans called Grom (Thunder). It quickly comes out that militiamen have to discover a rat in their group.
| Actor | Role |
|---|---|
 Krzysztof KołbasiukMarian | Marian |
 Henryk TalarKołdak | Kołdak |
 Wiesław GołasListwa | Listwa |
 Tomasz ZaliwskiJeżewski | Jeżewski |
 Andrzej PrecigsWertep | Wertep |
 Karol StrasburgerJazgarz | Jazgarz |
 Włodzimierz GołaszewskiGrom | Grom |
 Laura ŁączIrena | Irena |
 Zbigniew BuczkowskiOleś | Oleś |
 Marek FrąckowiakSiarka | Siarka |
| AAndrzej KrasickiIrena's father | Irena's father |
 Leon Niemczykprisoner | prisoner |
 Leszek PiskorzRudy | Rudy |