A modest and unpretentious engineer, works as a sociologist at a factory. His life is ordinary: feuds with colleagues, lack of money, everyday problems. He would have lived like this if one day “business people” had not offered him to work for them. But he finds himself at a crossroads: work with the mafia and live in abundance, or continue to exist modestly, but not change his principles...

A musical fairy tale film for children about how important it is to protect the heart from indifference and laziness and reveals a modern problem: in order to change something, you must, first of all, rebuild yourself. In this, the heroes of the fairy tale are helped by a wise, kind Dwarf who fights Rust and Mold who tries to own the thoughts and feelings of children.