This story takes place after the events of "The Lion, the Witch and the Wardrobe." Particularly, right after the Pevensie children became the new Kings and Queens of Narnia. A few Narnian years later, and orphaned boy named Shasta escapes slavery along with a talking horse named Bree. They plan to journey to Narnia. Along the way, they meet a teenage noblewoman who is trying to escape marriage and her talking mare. They all have selected to fulfill a prophecy involving the rightful rulers of Narnia's neighboring kingdoms.