Andrei Tarkovsky
At the dawn of World War III, a man searches for a way to restore peace to the world and finds he must give something in return.
Alexander, a journalist and former actor and philosopher, tells his little son how worried he is about the lack of spirituality of modern mankind. In the night of his birthday, the third world war breaks out. In his despair Alexander turns himself in a prayer to God, offering him everything to have the war not happen at all.