"The Horse and His Boy" is a novel by C.S. Lewis set in the fictional land of Narnia. It follows the journey of a young boy named Shasta and a talking horse named Bree as they escape from the land of Calormen to find freedom in Narnia. Along the way, they encounter various characters and face challenges that test their courage and friendship. The story explores themes of identity, bravery, and destiny. As Shasta learns more about himself and his true heritage, he discovers that he is connected to the royal family of Narnia. The adventure ultimately leads to a greater understanding of his place in the world and the importance of loyalty and friendship.