For centuries, the residents of the underground City of Ember have flourished in an amazing world of glittering lights and quiet contentment. But when the City's massive power generator begins to fail, the street lamps start to fade - along with the hopes and dreams of the townspeople. Now it's up to two courageous teenagers to follow a trail of clues left by the ancient Builders and find a way out of Ember before their world is plunged into darkness forever!
A dirty underworld in which a tightly controlled populace is not allowed out and so elements of resistance break out. Probably second only to cops and robbers with car chase in terms of remakes. To be interesting to anyone over 16 this is not different enough. I imagine from the cover though that this is aimed at the 6 - 10 year old audience.