I saw the movie and I haven't read the book which is part of a series by Jeanne DuPrau. I plan on reading the books though because the movie was really great. It stars Saoirse Ronan and Tim Robbins. Its about the underground city of Ember, and two teens journey out of it. They city looks pretty magical, bu its falling apart. The teens have to solve the mystery inside the box to get out of the city because the generator is going to give out and the city will be forever dark.