When William discovers a figure trapped beneath the ice of a local pond, he plunges into a fantastic adventure in a wintery world. For Treguard, the powerful lord of Knightmare Castle, needs William's help in a dramatic quest - to save a newly-hatched dragon from a terrible fate at the hands of an evil wizard... Read carefully, for as Treguard leads William through the dangers of an ice-locked kingdom, you too must prepare for the ultimate challenge—the monstrous puzzles and sorcery of ITV's award-winning game series. Can Treguard help William reach the dragon before the evil wizard and his ally, the sinister Queen Aesandre? Can you?