"The Lost Child" is a family film about the adventures of a little girl lost in Moscow. The world of a megacity at the start of the 21st century is neither good nor safe, but five-year-old Natacha approaches everything around her with such sincerity and confidence that people who meet her, change for the better. And, of course, nothing will happen to this little girl, she will overcome all the adventures and return home safe and sound. It is the story of a child and of today's Moscow, told in the language of the current generation, which continues the tradition of national cinema full of kindness.