From the publisher:
Misty's Twilight is part thouroughbred, part Chinoteague pony, and one hundred percent fire and talent. A direct descendant of the most famous pony ever, Misty of Chinoteague, Twilight has greatness in her blood. Now it's her turn to shine, perhaps as a cutting horse, a jumper, or in the graceful art of dressage.
Can Twilight, whose ancestors were wild ponies living on an untamed island, do it? Can she compete against the best horses in the world... and win?