After being shipwrecked on a remote desert island, courageous, young Alec Ramsay and a wild Arabian stallion named the "Black," form an irrevocable bond that continues after their rescue. Now teammates in the horse-racing circuit, they are poised to take the racing world by storm. No one else can ride the stunning fire and silk stallion but Alec; and though the Black's spirit is untamed, his speed is unmatched and he is swiftly becoming the fastest racehorse in the world.

Alec Ramsey, un garçon idéaliste, se lie d'amitié avec Black, un superbe étalon noir. Grâce à l'aide précieuse d'Henry Dailey, un vieil éleveur, Alec parvient à faire de Black un véritable cheval de course. Mais lors d'un entraînement, Henry est victime d'un infarctus. Son médecin lui recommande d'arrêter ses activités...