On Christmas Eve, everyone is sleeping in the house, except for the Christmas Tree Mouse, who has an important role. The Christmas Tree Mouse has taken on a very significant mission: to help Santa Claus on the busiest night of the year! This festive story by Joseph Coelho is filled with imagination, action, and emotion, offering a Christmas tale with an unusual hero: the Christmas Tree Mouse. This tiny creature, with its determination, is called to correct a mistake and save Christmas, something that will surely captivate young readers. The story delivers a message about the power of dedication, cleverness, and ingenuity, emphasizing that even the smallest creatures can bring about great change. The humor and modern technology introduced, like the tablet, give a fun and contemporary tone to the Christmas narrative, while the story simultaneously maintains the magic and warmth of tradition. It is definitely the perfect gift for Christmas, combining emotion, action, and a beautiful message for children, encouraging them to be creative, bold, and to believe in the importance of their actions, no matter how small they may be.