This book is about Ember, a post-apocalyptic city that is built underground to save the human species. Lina Mayfleet, and her best friend, Doon Harrow try to follow a set of clues left behind by the creators of the City of Ember, known as the builders, to get to the real outside world, where nobody dares to go.
But now they must go outside as the 2 centuries of rations of food and water that lasted an extra 40 years, are now coming to an end. But after many generations of living in the enclosed, walled city, nobody knows how to get to the outside world.
Lina and Doon find a box that has the instructions of how to get out of Ember, but Lina’s baby sister, Poppy makes it hard on them. She makes sure that Lina and Doon solve a puzzle because the pieces of paper have been torn, ripped, and eaten by Poppy.
Another challenge the Lina and Doon face is terminology. Because the letter on how to get out is now some 240 years old, the terminology has changed, it has words that are familiar to us like ‘boat’ or ‘candle’, but not familiar with the people of Ember. Lina and Doon figure out what these words mean to solve the already torn up piece of paper.
This book definitely keeps you wondering about the past and the future, and with many intriguing parts, I'm going to go with 4/5 stars for City of Ember.