At a time when the ecological crisis has never been so palpable, there's a rush to the railways: the French government has announced a 100 billion euro plan for the railroads between now and 2040, a major turning point after years of under-investment. Everywhere in the countryside, collectives sprang up to defend small lines, while construction sites for future high-speed lines were contested. A promise of freedom and the democratization of travel at the turn of the last century, the train fractured the country like never before. From the heart of the Massif Central to the southern Gironde, from Guéret to the railway towns of Miramas, a journey through railway France, between ecology, utopia and the demands of profitability.