London, September 1940 As the Battle of Britain rages overhead, Ann Marlowe, young staff nurse at St Martha's Hospital, battles to save the lives of wounded airmen, who are being admitted faster than she can hope to treat them American war correspondent, Josh Adams is caught in St Martha's during London's first daytime bomb raid What he sees dispels his professional detachment for ever, for nowhere is the indomitable spirit of the people more apparent As the capital faces the fury of the blitz, Josh's admiration turns to love, but he cannot persuade Ann to leave, even when St Martha's is razed to the ground