His classmate, Lina Mayfleet (Saoirse Ronan, the horrible sister from "Atonement" ), a descendant of one of Ember's mayors, becomes Doon's compatriot when she discovers an ancient box among her grandmother's possessions.
Adults are unlikely to embrace it either because the characters aren’t very interesting (after seeing her acclaimed performance in “Atonement,” it is somewhat disconcerting to see the talented Ronan take two steps back in order to appear in material like this that is clearly beneath her talents), the story is little more than a dumbed-down mix of such classics as “THX 1138,” “Logan’s Run” and “Dark City” and the religious symbolism thrown in here and there is so heavy-handed at times that it will inspire only giggles from certain viewers.
Trying to fit into their newfound professional roles in Ember, teens Lina (Saoirse Ronan, “Atonement”) and Doon (Harry Treadaway, “Brothers of the Head”) submit themselves to the numbing grind of the city, only to come across an escape plan left behind by the Builders.
Fortunately, the plan lands in the hands of two spunky teenagers -- Lina (Saoirse Ronan of "Atonement") and Roon (Harry Treadaway) -- whose plight it becomes to defy the never-leave-the-city dictates of their society and find their way to the surface.
With her heart set on being a messenger, Lina - played by Saoirse Ronan, the teenager nominated for an Oscar for last year's "Atonement" - secretly switches job assignments with a young man (Harry Treadaway) who drew her dream job, and their clandestine act forms the basis of a fast friendship.
Kenan has also cast a pair of very appealing actors, Saoirse Ronan ("Atonement") and Harry Treadaway ("Control"), in the lead roles of Lina Mayfleet and Doon Harrow, two young rebels who are determined to spearhead an escape from Ember before the lights go out forever.