The "Chronicles of Prydain" is a five-book fantasy series written by Lloyd Alexander. It follows the adventures of a young pig-keeper named Taran as he embarks on a quest to become a hero. Set in the fictional land of Prydain, the story draws inspiration from Welsh mythology and features a rich cast of characters, including Eilonwy, a princess, and Gurgi, a creature who aids Taran. The series begins with "The Book of Three" and concludes with "The High King." Throughout the journey, Taran learns valuable lessons about friendship, bravery, and self-discovery while facing various challenges, including the dark forces led by the evil Horned King. The books are celebrated for their engaging storytelling and depth of character development.