The City of Ember is a very dark city, people are scared that one day the lights will go off forever on the other hand going to school the major visits with pieces of paper to pull out, each have a job for the students to do, many kids got lucky but some of them didn't.Lina wasnt lucky at all she got pipeworks and doon got messenger they booth didnt like it so they traded lina liked messeging and doon liked to do pipeworks wich is working in tunnels.