"Good luck on your adventure. You seem like a very brave little mouse, and I know you'll manage to deliver the letter to Santa Claus before Christmas. Take care! Good luck!" On Christmas Eve, Winston finds a misplaced letter addressed to Santa Claus. Thus, he takes on a Very Important Mission: he will search for Santa Claus to deliver the letter before Christmas morning. As Winston roams the festive city, he will experience exciting adventures, make some wonderful new friends, and learn that an act of kindness can lead to a happy ending. A marvelous, tender story for the whole family that will keep you company while you wait for Christmas. It consists of twenty-four (and a half) chapters, each accompanied by a Christmas activity that you can do together at home or even with friends.