In 1946 a Romanian scientist discovers the bones of a prehistoric woolly mammoth but he also discovers traces of an important oil reserve.Greedy and unscrupulous agents of foreign oil company Columbiana wish to get their hands on the scientist's notes.These agents are prepared to even kill for those plans.Also, a team of workmen sent by the local district office of the Romanian Communist Party arrive in the area to help local villagers repair their agricultural tools.But the foreign agents of the oil company suspect these Communists to be there for the same thing they are,to obtain the plans and the notes of the scientist who discovered the oil.The oil company men plan to assassinate the Communist workers and to steal the scientist's notes. Sensing danger,the scientist decides to pass his notes and plans to someone for safekeeping.