All children, and sometimes adults, write letters to Santa Claus asking him to fulfill his deepest desire. Eight-year-old girl Masha is no exception. One New Year's Eve, she receives a puppy as a gift from Santa Claus, thanks to which her life is filled with incredible adventures. It turns out that our pets do not sleep at night, but serve Santa Claus and secretly do good deeds. Together with her dachshund, Masha accidentally finds herself in a magical, transcendental world, where dogs and cats speak human language and real miracles happen. The brave heroine will also visit the kingdom of the evil wizard - the enemy of Santa Claus, but thanks to her kind heart the girl defeats him and makes new friends. This book for family reading reminds us that kindness and love for our neighbors and our smaller brothers can work miracles!