Nézze meg a Teljes Film Magyarul. The hero of the film is the Petersburger Zinoviy Tennenboym. He works as a locksmith of the city service of Vodokanal. For 30 years, he climbed into the hatches and repairs the cranes. At another time, in another place, probably, he could be a scientist or a writer ... But he is satisfied with his fate. He loves his job. He knows how to be happy.