Lord Preston and his family are gathered in London in the late 1930s for what turns out to be a homecoming. The family is finally all together again, gathering in a way they haven't been able to do for years. But looming ahead is the summer and fall of 1940 when both the Battle of Britain and the Blitz will occur. Though the family is blissfully unaware of this soon-to-be reality, Lord Preston, privy to top secret info in his position in the government, has grave concerns; the gravest he's ever had, that England will be invaded. The Danforth family patriarch does his best to hide his fears with a cheerful exterior, but is he successful?