 Martin Clunes starred as Group Captain Barker; a man who flinches at the mention of, and has an inability to say the word, "Luftwaffe".In the early stages of their involvement in World War II a squadron of American bombers are en route to England.However, due to an air raid their intended destination, their newly constructed base, is unavailable and consequently they have to divert to a nearby base, RAF Lytchmere.