Sophie FitzOsborne lives in a crumbling castle in the tiny island kingdom of Montmaray with her eccentric and impoverished royal family. When she receives a journal for her sixteenth birthday, Sophie decides to chronicle day-to-day life on the island. But this is 1936, and the news that trickles in from the mainland reveals a world on the brink of war. The politics of Europe seem far away from their remote island—until two German officers land a boat on Montmaray. And then suddenly politics become very personal indeed.