When Princess Eilonwy is sent to the Isle of Mona for training, she is bewitched by the evil enchantress Achren, so Taran and other friends must try to rescue her.
In this final part of the chronicle of Prydain the forces of good and evil meet in an ultimate confrontation, which determines the fate of Taran, the Assistant Pig-Keeper who wanted to be a hero.
Eight short stories dealing with events that preceded the birth of Taran, the Assistant Pig-Keeper and key figure in the author's five works on the Kingdom of Prydain.
This is the second of five chronicles of Prydain in which Taran, the assistant-pig-keeper, longs to enter the world of men, but when he achieves his desire, he finds there is treachery as well as friendship.