At the close of World War Two, in 1945, the most powerful men alive - Winston Churchill, Roosevelt and Stalin - gather to survey the smoking ruins of Europe at the famous Yalta Conference. They must try and create a future where the atrocities of the last few years could never happen again. But as the negotiations begin that will eventually change the map of the world, the tension and pressure on political partnerships intensifies. In the fight against Hitler, Churchill's difficult relationship with the leaders of the Allied Powers, Roosevelt and Stalin, becomes a power struggle that will have the most dramatic global consequences.