After a stressful day, his beloved Lady returns, and takes charge.
The books span the entire history of Narnia, from its creation in The Magician's Nephew to its eventual destruction in The Last Battle.
Inspiration for the series was taken from multiple sources; in addition to adapting numerous traditional Christian themes, Lewis freely borrowed characters and ideas from Greek and Roman mythology as well as from traditional British and Irish fairy tales.
King Caspian X is now an old man, but his son and only heir, Prince Rilian, is missing.
Aslan the lion sends two children from England to Narnia on a mission to resolve the mystery: Eustace Scrubb, from The Voyage of the Dawn Treader, and his classmate, Jill Pole.
In the frame story, Eustace and Jill are students at a horrible boarding school, Experiment House.
The Silver Chair is dedicated to Nicholas Hardie, the son of Colin Hardie, a member of the Inklings with Lewis.
The books have profoundly influenced adult and children's fantasy literature since World War II.
Lewis's exploration of themes not usually present in children's literature, such as religion, as well as the books' perceived treatment of issues including race and gender, has caused some controversy.
Eustace, who was once a bully himself but is now fearing that he will soon be targeted by the gang he was once part of, confides in Jill about his Narnian adventures, and that his experiences there have led to the changes in his behaviour.