A stray dog was born on the street and learned to survive there: steal sausages, warm himself in doorways and make friends. One day, while fleeing from an evil saleswoman, he falls into a deep hole and cannot get out. He is saved by Mikhail, an elderly and lonely man with whom his family does not really want to communicate. He saves him and gives him a name - Styopka. It would seem that Mikhail and Styopka found each other so as not to be lonely, but when Mikhail brings the dog home, he feels bad. And now Styopka has very little time to call for help and save the life of his owner. But it is very difficult to do this, because none of the people understands it. Or is this not entirely true?