The Silver Chair

Eustace and a schoolmate, Jill, are off on an adventure in Narnia. Aslan the lion sends the two on a mission to find Prince Rilian, the son of Prince Caspian, who has been missing for many years. The two go underground and discover secrets below the surface and are finally able to resolve the mystery of the lost prince.

Another delightful story in the Narnia book series.