Set in the fictional realm of Narnia, a fantasy world of magic, mythical beasts, and talking animals, the series narrates the adventures of various children who play central roles in the unfolding history of that world. Except in The Horse and His Boy, the protagonists are all children from the real world, magically transported to Narnia, where they are called upon by the lion Aslan to protect Narnia from evil and restore the throne to its rightful line. The books span the entire history of Narnia, from its creation in The Magician's Nephew to its eventual destruction in The Last Battle. The Lion, the Witch and the Wardrobe : tells the story of four ordinary children: Peter, Susan, Edmund, and Lucy Pevensie, who have been evacuated to the English countryside from London in 1940 following the outbreak of World War II. They discover a wardrobe in Professor Digory Kirke's house that leads to the magical land of Narnia. The Pevensie children help Aslan, a talking lion, save Narnia from the evil White Witch, who has reigned over the land of Narnia for a century of perpetual winter with no Christmas. The children become kings and queens of this new-found land and establish the Golden Age of Narnia, leaving a legacy to be rediscovered in later books. Prince Caspian: The Return to Narnia : tells the story of the Pevensie children's second trip to Narnia. They are drawn back by the power of Susan's horn, blown by Prince Caspian to summon help in his hour of need. Narnia, as they knew it, is no more, as 1,300 years have passed and their castle is in ruins, while all Narnians have retreated so far within themselves that only Aslan's magic can wake them. Caspian has fled into the woods to escape his uncle, Miraz, who has usurped the throne. The children set out once again to save Narnia.