Two mice, who discover they are neighbors, bring their talents together to create a very special Christmas tree. Annamouse needs decorations for her Christmas tree but can't get to the store because of the deep snow. Willamouse needs a tree for her Christmas decorations, but she can't get to the store either. Will Santamouse know to come to their homes? These two mice seem destined to spend a lonely Christmas until Willamouse hears the sound of music...