I have seen some favourable comments about this movie but I must say this film plot is one of the worst I have ever seen. If you are a Science Fiction fan attracted by the title of the movie I advise you to avoid this film, I have to admit that after seeing the movie I still do not see any relation between the title and the movie. In my opinion an absurd/unfortunate mixture of ideas such as refugees, terrorism, religion, exploitation, marginality... and levitation. If you want my advice do not waste your time watching this movie.