Nine months after the onset of World War II, Hitler attacks the West - Belgium, the Netherlands, France and Great Britain - with intense violence. 1940. Nine months after the outbreak of World War II, Hitler attacks in the West, Belgium, the Netherlands, France and Great Britain. The "phoney war" ends, the real war begins, in an unleashing of violence never seen before. The devastating blitzkrieg exceeds all expectations in intensity and its soldiers push back all human limits by consuming Pervitine, a synthetic drug that prevents them from sleeping. After a four-year-long First World War, Hitler's feat was to defeat Belgium and the Netherlands in 18 days and France in barely 45 days... The Nazi apocalypse swept through Sedan, on the Somme and to the English Channel, the last rampart of Great Britain. At Dunkirk, which had become a bottleneck, the British fled en masse under enemy fire. Can Churchill save them?

May 1940. The French and the English retreat desperately. In Dunkirk, there are more than 300,000 troops waiting to be transhipped in hundreds of ships, which perform a heroic back and forth trips to England. Thousands of men perish at the sea, struck down by German bombs. Celebrated as heroes throughout Britain, the soldiers of Dunkirk were saved by the sacrifice of French soldiers. Paris is emptying of millions of refugees who experience a desperate exodus on the roads, and the government surrender. The entry of two major figures does not change anything: on June 17 Petain was appointed head of state and calls for an end to the fight, when de Gaulle urges, on June 18, to resist. However, the armistice is signed.