Despite my drab summary line this is not just another apocalypse movie. It's a highly intelligent realization of a possible future alien contact scenario that is credit to all those involved. The characters aren't perfect, and therein lies its beauty. The boy is slightly to very selfish in his practical appraisal of life, which sways from shallow to understandably deep, whilst the girl is caring enough to generally see past this issue toward a more optimistic view, whilst at the same time being sufficiently combative (she doesn't let him get away with it) to keep one interested. The relationship begins well before the "end' and builds in a carefully choreographed mosaic, moving forward and backward in time, to unravel their issues, which are poignant and relevant, as well as the story of their survival after the "end".
I was so impressed that my thought half-way through the movie was that I must ring the radio science call-in show here in WA (Doctor Carl) to find out if science has yet to invent or is trying to design, whatever, a huge self-sustaining spaceship, which can harness solar winds and gas particles and mine asteroids, etc, that would help to guarantee mankind's survival.
There are many really good apocalypse movies. This is easily one of the most novel and sophisticated so far. CGI? There's very, very little, but be reassured the photography is sufficiently superb, and the acting so first class, that after 20 minutes you'll be glad you chose this delight for sci-fi movie night.
Review by robertemerald from the Internet Movie Database.