In May 1919, six months after the end of the Great War in Europe, a French train departed from Berlin, carrying the German delegation to the Paris Peace Conference. The victors decided to meet in Paris to begin the daunting task of rebuilding the world and making a lasting peace settlement with Germany. In a clash of personalities and agendas, facing unimaginable circumstances, the world's leaders met for six months to try to deliver that promise. But just a few years later, their plan for peace would unravel, catapulting the world toward the very tragedy they had wanted to prevent... Was it their fault? Or was it inevitable?