Imagine a world with only artificial light. Everything you need/want comes from a vast storage room. What happens when the generator that has been powering your world stops working? What happens when the supplies run out? 200+ years in Ember and that is exactly what happens. They must find a way out before the lights go out forever.
Lina and Doon find a mysterious set of instructions that they are sure leads them out of the City. The must decipher it and they must make the people believe that its the only way to survive.
This book was wonderfully written about a world that is scary to imagine, but not that far fetched.
I would recommend it for anyone who enjoys post apocalyptic fiction.