City Of Embers

An underground city running out of power after 200 years. When the lights start failing and resources dwindle, two children, Lina Mayfleet and Doon Harrow, must decode an ancient message to find a way out before darkness consumes their world forever Series Book 1: The City Of Embers Book 2: The People Of Sparks Book 3: The Diamond Of Darkhold Book 4: The Prophet Of Yonwood There is also a movie released based on this book.