A businessman is stalked by his murderous twin brother, who has just been released from a mental hospital.

This movie is about the love and protection of a man from another culture for the lowly horsemen of the the plains in Hungary during World War II.

The Investigator, busy with processing the clues to a number of rapes and murders committed in the same way, tries to catch the murderer, that is to find the would-be victim first and then to identify the murderer before he could strike again.

Mózes Imre, the quality inspector of a big factory in Budapest loses his job overnight because he did not obey the director's instructions and refused some bad products of the company. When he brings the case before a court his arguments are not really appreciated. The director, however, recognises that, to a certain extent, Mózes is right and lets him re-enter as a head of a smaller operational section.