There is no room for imagination in the life of lawyer Pyotr Bezukhov. His life is governed by strict rules that he scrupulously follows. One day, his son Vanya finds the letters Piotr wrote to Saint Nicholas when he was a child and puts them in Santa Claus letterbox. The next morning, all of Bezouglov's childhood wishes begin to come true, endangering not only Piotr himself, but also his family and, perhaps, the entire world.