The four Pevensie children - Peter, Susan, Edmund, and Lucy - have defeated the White Witch and ended her eternal winter in the land of Narnia. With the help of Aslan the lion, they overcame many obstacles including the betrayal of Edmund to the White Witch. Aslan sacrificed himself to save Edmund but was later resurrected to help the Pevensies defeat the White Witch in battle. The children are now expected to rule over the free land of Narnia.