I krigstid er det enhver officers ret og pligt at flygte, hvis han skulle blive fanget. Det tager Virgil Hilts og andre allierede officerer meget alvorligt, og da tyskerne placerer flugteksperterne i samme lejr, giver det dem mulighed for at planlægge en usædvanlig masseflugt.

I et par måneder i sommeren 1940 raser en luftkrig over England. Tyskerne har fire gange så mange fly, og briterne mangler piloter. Det er en ulige kamp. Briterne har desperat brug for et mirakel og får det fra en helt uventet kant. "Aldrig har så mange skyldt så få så meget", udbrød Churchill efter den britiske sejr over Tyskland i luftkrigen over England.

Canadian Mountie Steve Wagner captures a German Luftwaffe officer on a spy mission, who later escapes from the prison camp. To catch the spy ring, the Mounties employ a ruse so that the spies, believing Steve to be sympathetic, enlist him in their plans.

Wartime tale of a group of British scientists efforts to develop the first radar system. They did it just in time for it to be used in the Battle of Britain against the might of the Nazi Luftwaffe. Without it the little island could well have been overrun.

A young pilot, fresh out of training, is called to join a Flight while they wait for the call to scramble. Throughout a single day, he witnesses the skies of southern England filled with deadly dog fights, and after every exhausting battle the men return to their dispersal hut, only to find another of their number missing. Unwilling to surrender, the pilot and his comrades unite to take to the skies once more, determined to defend not only the airfield, but their entire country.