Prince Caspian — the fourth book in C. S. Lewis’s The Chronicles of Narnia — takes place years after the Pevensie siblings have returned to England and forgotten Narnia. The magical land falls under the oppressive rule of the Telmarines, who have overthrown its native creatures and legends.
 
When Narnia’s princess, Susan Pevensie, hears the sound of a magical horn, she senses her siblings’ return. Peter, Susan, Edmund, and Lucy are summoned back, where they join Prince Caspian, the rightful heir to the throne, in his quest to restore justice. With the help of Aslan and a coalition of talking animals and mythical friends, they challenge the usurping king.