A musical film based on the Russian folk tale of the same name. The story is about an arrogant but agile bread kid who managed to get around everyone except the treacherous Fox.

Professor Sretenski is a scientist and director of a research center in Russia. He is separated from his wife and lives alone. His daughter, who lives with the mother, comes to his home and stays with him for a period, leaving her daughter with him. He raises his granddaughter, feeling a great affection for her.