The City of Ember
Jeanne DuPrau
Many hundreds of years ago, the city of Ember was created by the Builders to contain everything needed for human survival. It worked - but now the storerooms are almost out of food, crops are blighted, corruption is spreading through the city and worst of all - the lights are failing. Soon Ember could be engulfed by darkness-But when two children, Lina and Doon, discover fragments of an ancient parchment, they begin to wonder if there could be a way out of Ember. Can they decipher the words from long ago and find a new future for everyone? Will the people of Ember listen to them?
Reviews

Great story about people who don’t know anything about the outside world and are stuck in an under ground city where blackouts are regular and people struggle to survive
Anonymous 14.07.2022

The best book I have ever read
Anonymous 10.08.2014