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).

Adam Kavalír returns from abroad to take over the family factory from his father. But as a consequence of his father's bohemian lifestyle the business is so far in debt that the Kavalírs even lose their villa and must find a place to sublet. Mrs. Trojanová is no longer up to managing her pension, the co-owner of which is none other than her peevish daughter Eva, and she is looking for a capable manager. Adam applies for the position and is accepted.