What happens in chapter 9 in the book Narnia?

In Chapter 9 of "The Lion, the Witch, and the Wardrobe," Peter, Susan, and Lucy are reunited with Mr. Tumnus after he was turned into a statue by the White Witch. Aslan returns to Narnia and begins preparing for battle against the Witch's forces. The chapter sets the stage for the climactic showdown between good and evil.