Season 1 of Clash of Futures (1918-1939) premiered on September 8, 2018.

From the armistice of 1918, which marked the end of the First World War, to the declaration of war in September 1939, the beginning of the Second World War: an era during which there was an aspiration to create a new world, prosperous and at peace, but which provoked a new tragedy, seen through the destinies of thirteen people who were both actors and witnesses of the upheavals of the so-called inter-war period.