The City of Ember is a young adult novel written by Jeanne DuPrau, published in 2003. The story takes place in an underground city called Ember, where two teenagers, Lina Mayfleet and Doon Harrow, embark on a quest to unravel the mysteries of their city and save their community from disaster. The novel is a thought-provoking and engaging tale that explores themes of hope, resilience, and the human spirit.