the opening scene of this movie be pretty incredible . i have see a number of sci fi movie with great special effect but my roommate and i look at each other after the opening sequence and he say plainly and sensory overload . the plot of the movie be pretty simple but the nice thing about this sci fi movie be that it let the audience figure out most of the technology for themselves instead of waste time to subtly explain it . the creature in this movie be also very interesting . you do not get a really good look at them until about two third of the way through . overall and a very entertaining movie .