As a birthday treat, Thomas and his friends travel to the sky-world of the Ariels - an enchanting land that floats in the clouds, rich in breathtaking beauty and powerful magic. But hidden dangers loom: throughout the land are rumors of the wild and terrifying Flying Huntsman - a fierce storm-giant from the beginning of time who hunts the sky regions astride his brutish horse with a pack of dogs. When Thomas is suddenly snatched from his friends, his visit turns into one of danger and confusion. Is the Flying Huntsman behind his disappearance, or is there another enemy on the loose?