If the war is still ongoing in 1947 with a re-established empire, it is because the landing in Normandy ended in catastrophe for the Allies. Since then, this day has been referred to as the Day of Catastrophe in the free world. Around Murnau, a young and already brilliant Luftwaffe officer at the controls of his jet-powered fighter-bomber Me 262, the catastrophe unfolds in the heat of an apocalyptic battle. Some phenomena remain a mystery even to the Germans! But when fate intervenes so dramatically, it is better not to question its true nature and intentions...