In 1948, when Hungarian industry counts on almost every liter of fuel, the production of Makert, an American oil company in Hungary, is declining by the day. The firm's American owners claim that the oil field is depleted. However, the new government controller, Nerges, discovers that this is sophisticated sabotage by which representatives of American industrial circles want to disrupt socialist construction in the country. With the help of Hungarian state security officers, Nergesz uncovers and neutralizes the saboteurs at the mine and hastens the Hungarian people's decision to nationalize Makert.
József Bihari
as Barla, mérnök
Erzsi Orsolya
as Barláné
Ferenc Ladányi
as Nyerges, a MAKIRT termelési felelõse
Sándor Suka
as Környe
Gyula Benkő
as Budai örnagy
József Juhász
as Öreg munkás
István Palotai
as Simics
Lörinc Deák
as Államtitkár
Lajos Rajczy
as Kristófi, ÁVH vezérezredes
Antal Farkas
as ÁVH õrmester
Lajos Mányai
as Dalton
Andor Ajtay
as Pápay
