Ch. 4 - City of Ember by Jeanne Duprau

Lina discovers a mysterious, half-destroyed document tucked away in a closet at home—its strange symbols hint at a hidden message from the past. As she tries to piece it together, Doon dives deeper into Ember’s failing underground systems. Together, they begin to uncover secrets the city’s leaders would rather keep buried. Could this be the key to saving Ember?