Summer holidays are a time to relax, go for a walk, and hang out with friends. And for the inseparable trio - Andrey, Alinka and Nazar - it works out perfectly. But then the trouble happened - Alinka's shepherd dog Rex disappeared. It turned out that he had to be found in another city, and in secret from his parents. And the friends go in search of him. Will they be able to find the dog and return home in time? And what do apricots have to do with it?