The city of Ember is a fictional underground city. It was built to preserve human life after a huge disaster. Where everyone in the town dread the thought of the lights going out and never coming back on.
== The sky is always dark in Ember. The only lights are attached to the buildings, and they're turned off between 9 pm and 6 am.
The kids graduate from school when they are only 12 years old. On the day of graduation they are assigned random jobs which they work at for the next 3 years. After that they can request a career transition ==