OK this is not a movie about serious drama or significant plotlines, it is a typical disaster movie (but 5X better). It takes special effects to a level everyone wanted to do in the past but couldn't. If you are a Towering Inferno or Posieden (old or new) admirer, this movie has all of those and so much more. And I DO mean this movie includes them! Again, don't anticipate Meryl Streep Oscar type of movie. I would suggest if you don't like disaster movies... don't see it, you won't like it. If you do, you will not realize 2 1/2 hours have passed and will be on the edge of your seat from one moment to the next. Like a good disaster... GO SEE IT.
don't expect normal sci-fi here. It is very political. The sci-fi is the side story to the bigger issues. So it is 70-30 ratio to political to sci-fi. Enjoy it but don't go in thinking 'Aliens' or 'Start Trek' type of movie. This is more of reality with creatures you just don't normally see.