VE Day, 1945. The war is over. The PM has seen the crowds and made his speech. Now he wishes to soak up the atmosphere, moving incognito among his fellow countrymen. But an alien interloper lurks in a backstreet tavern, and ‘William Churchyard’ must lead a few plucky Londoners into one more fight. The Doctor is in trouble, and at the time of his greatest victory, Churchill also faces his greatest danger...