Alec Ramsey has fled Hopeful Farm in order to alleviate his grief over Pam's sudden death. He and the Black are aimlessly wandering through the Arizona desert when they hear an amazing Native American legend: The end of the world is near, but help is promised from a rider on a black horse. Alec shrugs off the wild tale–until disaster strikes from the sky. Suddenly the fate of an entire native tribe is in his hands . . . and the mighty Black is faced with a challenge greater than any race!