This light-hearted comedy operetta tells the story of a newly appointed high school professor who becomes an ideal target for pranks and jokes.
Detective Klubíčko is searching for the murderer of a wealthy loan shark because he is the only one who does not believe that the victim's husband, the private entrepreneur Zakhar, could be the murderer. Inconsistencies in the statements gradually lead him to the real perpetrator. He is only able to convict him with the help of a crime reconstruction...
