Germany and Japan defeated the Allied forces during World War II and now the Nazis run the world. Alfred, a thirty year old English man, is a ground mechanic at the Salisbury Aerodrome but makes a pilgrimage to Germany so that he can see the sites that are meaningful in Hitlerism, the only religion left in the world. The Hitler of the new world is not the short, dark haired man we have come to recognize from history books, but a seven foot tall with long blonde hair and blue eyes, far more in the image of the master race that he had espoused at the start of his reich.
Alfred's friend Herman is a Nazi and so Alfred goest to stay with him. He meets a man called Friedrich von Hess who is a Knight and a preacher who preaches the Word of Hitler and tells Herman that any books that preached anything other than such a Word were burned. However, von Hess knows what life before Hitler was like because one of his ancestors wrote a secret tome about it and passed it down to him. He also has a photograph of Hitler before he became deified.When Alfred sees that Hitler uses to be a short brown-haired man he is even more sure than ever that Hitler is not a god at all.
Alfred also believes that women used to be very different to the way they are in the new world. Women in the Nazi empire are shaven-headed and have no personal identity. They are kept in a women's compound and their only function is to produce children and continue the Nazi race. Alfred wants to turn back the clock and give women back their rightful independent existence and he also wants to tell his fellow Englishmen about the life the world knew before Hitler as soon as he returns from his pilgrimage.
When Alfred returns to England, Hermann goes with him. Alfred starts to teach the world about life before Hitler, starting with his own son. After they have finished reading the book together they are almost discovered with it by Nazi soldiers. Hermann runs at them, drawing their attention from Alfred's son who has escaped with the book. This personal sacrifice leads to Hermann's death, and when one of the soldiers kicks disparagingly at Hermann after he is dead, Alfred tries to attack him but is beaten up, and rendered unconscious.
Alfred is badly injured, and only briefly regains consciousness, but he is awake long enough to see his son again, and to tell him that he must continue Alfred's mission, and tell the world that Hitler is a fraud.