The Silver Chair by C.S. Lewis
Series: The Chronicles of Narnia #6
Eustace returns accompanied by his classmate Jill as they flee the school bullies. Once again years have passed in the land of Narnia and Aslan has a mission for the Son of Adam and the Daughter of Eve. They set out to rescue the prince from the terrible sorceress, but the story is more about the struggles of the journey than their victory. More than in any of the other books this one reminds you that things are not always as they seem. Ironically though I had forgotten many things from these books in the years since I last read them one image has stuck with me: Rillian, Jill and Eustace chasing down the school bullies blades drawn. This is another win for the underdogs.