The final film about a hand-trot called Kunak. Previous films of tetralogy "Path of disinterested love", "Lynx goes to the path" and "Lynx returns." The main theme is the love of animals and nature. The continuation of the films "The path of disinterested love," "Lynx returns," "Hello, Kunak!", Where the main character is a lynx. The peace of the quiet forest cordon, where the family of the huntsman Losev lives with his friend, a domestic trot called Kunak, violates the fire that happened at night in a nearby animal farm. According to the version of the director of the animal farm of Mostovoi, valuable and unique animals - Barguzin sables, he had to be released to freedom for their salvation. Losev's search for tracks of runaway animals leads him to uncover the secrets of an underground sable farm. The criminals who were going to smuggle stolen sables abroad, realizing that their plans were uncovered, kidnap the daughter of the huntsman and deceive Losev himself. But the faithful Kunak destroys all plans of criminals. With its help it is possible to expose and detain the leader of the criminal community - the director of the animal husbandry enterprise.