Moscow. His six-year-old grandson Denis is brought to the old-timer of the house on Karetny, Denis Viktorovich. Grandfather Denis tells stories to his grandson every day about his peer, who lived in a completely different era. The stories of Denis's grandfather become a portal to his carefree Soviet childhood in one of the Moscow courtyards. Stories come to life, and grandson Denis goes on a journey into the past. It turns out that at any time children have a lot in common - curiosity, spontaneity, immense love and interest in how this world works.
