The Book of Three - Usborne Modern Classics New edition

Taran dreams of fighting heroic battles instead of being an Assistant Pig-Keeper until Hen Wen, the magical pig, disappears. With the land of Prydain under threat from the Horned King, and Taran searching for Hen Wen, he is drawn into a deadly quest. Coming face-to-face with warriors and witches, Taran is about to learn what it takes to be a hero.