Paul and Maureen are siblings who live on the island of Chincoteague, off the coast of Virginia. On a nearby island live a group of wild horses. The children have their hearts set on the capture of the elusive Phantom, a mare that has never been captured. During the annual roundup called Pony Penning day, Paul captures Phantom and her newly-born colt. Paul and Maureen are able to purchase both horses and work together training Phantom for the upcoming...