Frigyes Karinthy's comedy, written in the 1920s, uses the farce of a genius inventor to expose the corrupt officials of the time, the unfaithful wife and the cheating doctor - and then, at the end of the play, another twist in which the actors playing the satire reveal themselves...

In the country reformatory school both the teacher and the children are trapped by the circumstances. From among the pupils excels Sanyi, who cannot accept the fact that his mother does not love him and he keeps on escaping after her. From among the teachers it is Mr. Csőrös who distinguishes himself by listening to the children, looking for those who escaped, Sanyi feels affection to him.

The film has a broken meaning, the last time he was a proofreader for a book publisher, he is now unemployed. Ever since he was a child, he has always been the one who pulls the short one, and he takes the wrong one. At the beginning of the film, he finds himself in such a "bunbak" situation again, and then he decides to become a professional bunbak...