This time of darkness

Eleven-year-old Amy lives in a decaying underground city. Ignored by her mother and under surveillance by authorities because she can read, Amy reluctantly finds herself befriending Axel-a strange boy who claims to have come from a mythical place called... Outside. Is Axel crazy? Amy knows there is no such place as Outside. But what if there were? What would it be like? Curious, Amy convinces Axel to escape. What she hopes to find is something Axel remembers called freedom. But she discovers is beyond her wildest dreams.