In this book, the two field mice celebrate winter while discovering the joy of friendship and generosity. Guri and Gura are having a snowball fight when, suddenly, they come upon huge footprints in the snow. Following the prints to their house, they find inside an unexpected winter guest - an old man with a long white beard. With a joyous 'Merry Christmas', he presents Guri and Gura with a beautiful cake, which they share with their friends in the forest.