At no other time did more aircraft dominate the skies than during the Second World War. In the battle for supremacy in the skies, aircraft became a destructive weapon. Loaded with bombs and ammunition, they provided fear and terror from the air. It is the gruesome story of kamikaze pilots, "Stukas" and fighter planes, but also of ground-breaking technical achievements, such as the invention of the jet engine, which was to revolutionise aviation. In the civilian sector, too. Within a few decades, flying changed from an exclusive pleasure of a few to an almost everyday, mass means of transport. The second part of the documentary traces these developments - from the Second World War to the challenges facing aviation today.