From the Phoney War of 1939 to the Battle of Britain in 1940, the pilots of Hornet Squadron learn their lessons the hard way. Hi-jinks are all very well on the ground, but once in a Hurricane's cockpit, the best killers keep their wits close.
Newly promoted Commanding Officer Fanny Barton has a job on to whip the Hornets into shape before they face the Luftwaffe's seasoned pilots. And sometimes Fighter Command, with its obsolete tactics and stiff doctrines, is the real menace.