We normally witness the power of the Thoroughbred charging down the stretch, but today we meet a group of ex-racehorses who reveal a much greater power. They're affecting the lives of entire families. Our Breeders' Cup or Bust tour took us to Half Moon Bay, Calif., home to the Square Peg Foundation, a place that welcomes children who struggle in life and the off-track Thoroughbreds who, it turns out, need them. To see what happens when these kids - most of them on the autistic spectrum - connect with ex-racehorses who are trying to discover their own potential is both remarkable and deeply moving.