A young engineer is sent to post-WWII Berlin to help the Americans in spying on the Russians. In a time and place where discretion is still a man’s best friend, he falls in love with a mysterious woman who will take him on the dark side of evil.

It's a big night at the New Dragon Inn when a coach of distinguished Germans arrives. But disaster looms - it's the local cricket team's annual fancy dress bash and the theme is the Second World War.