The film is dedicated to the 550th anniversary of the Battle of Grunwald. Poland. Map of Poland (animation). Area of the city of Tannenberg and the village of Grunwald. Grunwald field (general and medium plans). Fragments of the feature film "Alexander Nevsky". Illustrations on the theme of the Battle of Grunwald, filmed using animation. Portrait of the Grand Master of the Teutonic Order Ulrich von Jungingen. Portrait of the Polish chronicler Jan Dlugosz. Grave of W. von Jungingen. Chronicle. The Second World War. The year is 1939. Parade of German troops. A. Hitler on the podium. The entry of German troops into the territory of Poland: the barrier of the Polish-German border, a German soldier tears down the Polish coat of arms; Warsaw is on fire; punitive actions of German troops against civilians. 1941-1945. Fighting German troops on the territory of the USSR. Formation of the Czechoslovak and Polish formations. Division named after Tadeusz Kosciuszko. Fighting Polish and Soviet troops in Poland. Soviet and Polish troops enter the liberated city. Residents welcomed the deputy commander-in-chief of the Polish army A. Zavadsky. Member of the Polish Workers' Party V. Gomulka in a partisan detachment. Explosions, fires. German soldiers blow up a railway track, a bridge. Soviet and Polish soldiers in the ranks of the Polish flag. Poland. Landscapes. Baltic Sea coast landscape. Meeting dedicated to the 15th anniversary of the Polish People's Republic in the city of Szczecin. Nikita Khrushchev is speaking. On the podium among those present: V. Gomulka. A rally in the city of Katowice, on the Grunwald field. Germany East. Landscapes. Production processes at the plant, mine named after E. Telman, construction site. Berlin East street. Border between East and West Germany. Germany West. A parade of supporters of the policy of revanchism. K. Adenauer takes the parade. The movement of military vehicles.