What happens in the city of ember, book 1?

City Of Ember Book 1: SummaryAfter the Earth's destruction. Lina Mayfleet, and Doon Harrow are two children in Ember who find themselves on a mission to save their dying city. The city's lights are beginning to flicker and food supplies are running out. Doon lands a job at the Pipeworks where he wants to try to repair the failing generator. The find the builders instructions to leave the city, and they go to a new place, with a sky of blue, and grass, the color of green. They have just discovered that they were living underground.

After Earth's destruction. Lina mayfleet, and Doone Harrow are two children in Ember who find themselves on a mission to save their dying city. The city's lights are beginning to flicker and food supplies are running out. Doon lands a job at the Pipework where he wants to try to repair the failing generator.