Sasha, together with her dog named Nayda, comes on vacation to visit her uncle - her mother's brother - in a picturesque forest place. Faithful dog Nayda always helps his mistress on occasion, finds his way home when Sasha gets lost in the forest. However, the girl does not reciprocate the selfless love of Nayda, reproaching her for the fact that there is a lot of trouble with the dogs: it is necessary to take them out for a walk and look after them. Having received a letter from her mother, Sasha leaves home and leaves Nayda with her uncle.