A young boy named Alec Ramsey boards a ship with his father. During the voyage, Alec is captivated by a wild black stallion that is being transported on the same ship. When the ship encounters a severe storm, it sinks, leaving Alec stranded on a deserted island. Miraculously, both Alec and the stallion survive and wash ashore on the island. Over time, Alec forms a deep bond with the stallion, whom he names "The Black." They develop a mutual trust, relying on each other to survive in their isolated environment.

Eventually, Alec and The Black are rescued and return to the United States. Struggling to adjust to normal life but determined to keep his bond with the horse, Alec seeks out Henry Dailey, a retired jockey. With Henry's guidance, Alec begins to train The Black, aiming to harness the horse’s incredible speed for the racetrack. As Alec and The Black prepare for an important race that could prove the stallion’s prowess, their friendship and resilience are tested. Their journey together becomes a testament to overcoming obstacles and embracing the extraordinary bond between human and animal.