Engineer Nawrat, together with the mining crew, takes up the fight to save the local mine from being taken over by foreign capital.
Nawrat
Teresa Pogorzałkówna
Nawrat's Mother
Irena la Rochelle
Pogorzalka
Foreman of Świtała
Zosia
Smolski
Ratkiewicz
Gustlik
Kałuża
A beetle
Walek
Ildefons
