The Horse and His Boy takes place during the reign of the Pevensies in Narnia, an era which begins and ends in the last chapter of The Lion, the Witch and the Wardrobe. A talking horse called Bree and a young boy named Shasta are the protagonists. By chance, they meet and plan their return to Narnia and freedom.?

Though they are only looking to escape their harsh and narrow lives, they soon find themselves at the center of a terrible battle. It is a battle that will decide their fate and the fate of Narnia itself.