The fourth book of the Prydain cycle tells of the adventures that befell Taran when he went in search of his birthright and the truth about himself. Since The Book of Three was first published in 1964, young readers have been enthralled by the adventures of Taran the Assistant Pig-keeper and his quest to become a hero. Taran is joined by an engaging cast of characters that includes Eilonwy, the strong-willed and sharp-tongued princess Fflewddur Fflam, the hyperbole-prone bard the ever-faithful Gurgi and the curmudgeonly Doli--all of whom become involved in an epic struggle between good and evil that shapes the fate of the legendary land of Prydain.