City of Ember

For generations, the citizens of the City of Ember have flourished in an fantasy world of glittering lights. But Ember's once powerful generator is slowing and the bright lamps that illuminate the city are starting to die. Lina (Saoirse Ronan) and Doon (Harry Treadaway) unknowingly find themselves on an adventure when they discover the way out of Ember, but corrupt officials, and a treacherous Mayor (Bill Murray) stand against their wishes of saving the city.