James Lee Crown wants to raise the value of his horse and to do that he gets someone who works for his competition, to ensure that his horse wins. At a race, the horse of Wes Calhoun, is the one he is worried about and his man has managed to deliver so far but Calhoun senses that his jockey has been holding back. He tells him that if he continues to do that, he will be replaced. After he wins, Crown confronts Calhoun and his man, when Calhoun tells him that he wants no part of what he is doing, Crown shoots the both of them and the horse. Walker suspects something when he remembers how Calhoun's man looked after they won. He has Trivette look into it while he goes visit his friend, Max Elson. Elson's a former rodeo star who suffered a paralyzing injury. And he is now facing the possibility of losing his ranch unless he can come up with some money - if he could only enter his horse Rainbow's End, in the Texas Derby, and win they might save the ranch. But first they need a sponsor, so Wa