Just when Winnie Willis feels like school could be almost tolerable, Summer Spidell has to be . . . well, Summer. Worse, Winnie's friend Hawk is away for Christmas vacation, and Winnie is lonely. Then a mysterious horse shows up in the pasture behind her house. Suddenly Winnie is caught in a life-and-death struggle with the old mare.
Who is the horse's owner? Will Winnie be able to keep-and save-this "gift horse"?