Please, Oh Please Be Good.

I saw a trailer for this a few months ago, and it didn't really tell me much about the film, other than aliens had arrived on Earth. But now with this new trailer it gives us the impression that we, humanity, are the bad guys and seemingly won't let the aliens leave. An original concept (at least to my knowledge), and I really hope it works well.

If not, well I guess we're going to have to continue having our cinemas flooded with novel-to-film adaptations, sequels, and videogame-to-film adaptations, because it seems the only original movies that come out nowadays are shitty chick flicks. So for the love of God, a decent, original sci-fi movie please. Is that too much to ask?