In September 1940, in two factories in Southampton, one of the most iconic planes of World War Two was being painstakingly assembled, piece by piece. This sleek and beautiful fighter, with record breaking top speeds and a deadly reputation for precision, was to be Britain’s most notorious weapon against the Nazi air invasion. But, the factory making them was about to be destroyed by devastating German bombing raids. How could the Battle of Britain be fought without the Spitfire? With the factory a smoking ruin, a plan was hatched to keep the planes coming, against some pretty extraordinary odds