"Wait til you see King - he's the finest wild stallion in Idaho!" Ben Darby and his sister Dixie proudly lead their visitors to the high valley where King roams... and see a strange horse leading his band of mares! "He's probably dead," Mr. Darby says. But Ben, Dixie, and colt-trainer Gaucho don't agree. They think King has been stolen.. and they saddle up to prove it.