Prince Caspian is a sequel to C. S. Lewis’s classic children’s fantasy book The Lion, the Witch and the Wardrobe. In The Lion, the Witch and the Wardrobe, Pevensie siblings Peter, Susan, Edmund, and Lucy are sent away to the countryside to avoid the German bombing of WWII Britain. At their new residence, Lucy Pevensie discovers a portal to the parallel realm of Narnia in the back of a wardrobe; once there, she meets many fantasy creatures and learns about their suffering under the reign of the evil White Witch. She eventually returns to Narnia with her older siblings and joins forces with the good lion Aslan to end the Witch’s rule. The Pevensies then reign in Narnia for several years before accidentally returning to Earth, only to discover that virtually no time has passed back home. The Lion, the Witch and the Wardrobe was the first book Lewis published in his Narnia series (though the second in the series’ own timeline) and contains some of his most explicit allusions to Christianity, including the murder and resurrection of the Christ figure Aslan.

In Prince Caspian, the Pevensie children have a dynamic similar to that in The Lion, the Witch and the Wardrobe.