Mahubah has been mated to Fair Play and young Danny Ryan waits days and nights for her to foal. Who can tell what they will get, with Hastings, a wild one, for a grandsire? Danny is there to see the first hoof, then the second, finally the big nostrils, the star, as the great colt arrives. And he stays with his ""Red"", first as stable boy, then as groom, until Man O 'War won more money and sired more champions than any other race horse. This fictionalized biography by the horse fraternity's own Walter Farley will appeal not only to the buffs, but to all- of every age- who want to know more about ""the greatest"".