Paweł Palcat

Operation Danube was the cover name for the invasion of Czechoslovakia by Warsaw Pact armies in August 1968. The fleet of Polish tanks which arrive to liberate their neighbor, ostensibly threatened by a counter-revolution, includes the old tank nicknamed Ladybird, which is the last to leave the barracks.

During the Cold War, a local Polish officer and a young Soviet woman wedded to a Soviet officer are drawn together by music.