The main characters of the book are William Dodd, appointed US ambassador to Berlin in 1933, and his daughter, a socialite who initially admired Hitler's regime. The plot is based on official documents, memoirs, diaries and letters that allow you to learn about the fate of the main characters: diplomats, public figures, journalists, representatives of the Nazi elite and ordinary people. Together with the ambassador and his family, the reader goes from rejection of reality to the awareness of evil that the Nazi regime carries, and then to desperate but unsuccessful attempts to warn the world of impending danger.