A year after the last of the Pevensie children, Edmund and Lucy, had their last journey in the land of Narnia, their cousin Eustace, who has been to the magical land before, is able to go back again in bringing his friend from school, Jill Pole. Together, the two children set foot in Narnia and take up on the quest to find a missing prince of Narnia, who is predicted to be the long lost son of King Caspian the Tenth. They journey out of the mainlands and into the north to fulfill their long distance journey with the help of a marshwiggle named Puddlegrum to accompany them on this mission to restore a broken royalty of kinship within the lineage of Narnian kings