First days of September 1939. The government decides to transport the Polish gold stored in the treasury of the National Bank of Poland out of the threatened Warsaw. A convoy is formed under the command of the man for special tasks, Major Bobruk. A string of trucks and city buses travel along crowded roads under relentless attack by aircraft. The convoy makes its way through Lublin to Romanian territory, where the gold will be reloaded onto a train. Prime Minister Calinescu, disregarding the threats of the Nazis, agrees to the transit of the precious bullion through his country. The evacuation of the gold is threatened all the time by a special German sabotage group under the command of Second Lieutenant Rudolf Lang.