At the end of World War II, American army officer Captain Sean O'Sullivan is commissioned with rebuilding Berlin. Reeling from the death of his brothers at German hands and faced with the direct horrors of the Holocaust, O'Sullivan struggles against his animosity toward the nation he is helping restore. Meanwhile, Soviet forces blockade Germany in a bid for power, and the Western Allies must unite to prevent a communist takeover. When the airlift begins, the Allies find their deepest convictions tested as they fight against a threat even more dangerous than Hitler.