The main Santa Claus was injured and will not be able to distribute gifts to all children and arrange a New Year's miracle. Then it was decided to send his son, the still inexperienced Santa Claus, to save the holiday. However, having moved out on a mission, young Frost loses his magic staff, and he finds himself somewhere on the outskirts of Moscow. The magic power hidden in the staff is mastered by an official who uses it for his own purposes. And the Frost-son is trying to orient himself in the New Year's metropolis and cope with the difficult task set for him.