With Orville's broken leg nearly healed, he and Kate go fishing. Orville flies back, carrying the fishing pole in his talons, as part of his physical therapy, while Kate walks alone across the vast prairie. Only she does not arrive.
Her parents, having gone for the Labor Day Weekend, leaving a slightly addled grandmother at home, creates a desperate situation for Kate. Orville and his schoolmates, along with the county sheriff's department and a dog named Deputy Grace must combine forces to find Kate before it is too late.
