1942, the German Wehrmacht is trying to capture the Baku oilfields at the Black sea. Their biggest obstacle are the Caucasian Mountains and few Russians soldiers to stop them. The story revolves around an important Mountain Pass, that is heavily contested by both sides.
The head of the Pervomaiskaya Railway, at the first stage of perestroika, having accidentally learned that they want to fire him from his job, decides to carry out an experiment he had long planned - to put a super-heavy train on the tracks...
