While running away from Mrs Macready after accidentally breaking a window, the four siblings retreat to the wardrobe and enter Narnia. They discover Mr. Tumnus has been taken by the Witch, and meet Mr. and Mrs. Beaver, who tell them about Aslan. According to the beavers, Aslan intends to take control of Narnia from the Witch. The four must help Aslan; it has been prophesied that if two sons of Adam and two daughters of Eve sit in the four thrones, the White Witch's reign will end.