An old man is wandering round a badly signposted and as yet mostly under construction Prague housing estate looking for the high rise block into which he is supposed to be moving with his daughter's family. The old granddad from the countryside likes chatting, nothing escapes his eyes and he wants to give everyone a helping hand.
At the year 1946, the time of the Nuremberg Process. One of the main actors of the Second World War, who reportedly committed suicide, Adolf Hitler is, however, missing. The Czech doctor Herman (Karel Höger) is kidnapped from Prague and driven to the sanatorium of Professor Rolf Harting (Jirí Vrstála). The sanatorium is a disguised military stronghold, most probably occupied by a Nazi garrison, with prison cells and an execution chamber in the basement. At night, Herman is taken to a patient in whom he, to his horror, recognizes Hitler (Fritz Diez).
A mysterious man named Michael Allan Jones arrives in Prague to search for his ancestors. Specifically, he is interested in the year 1611, when a meteorite allegedly crashed near Dobruška. The search for him is helped by nice writer Marcela, who writes a short story about this topic. He thinks it wasn't a meteorite, but a UFO. With her, Michael visits several Czech locations with a mysterious past.