Good story, Not enough for a whole film

A lot of perfectly good film show their cards early, establish a unique premise and let the audience explore a topic at a leisurely pace, without much in terms of surprise. this film is not one of those films.

While it doesn't offer any answers, it both thrills and makes you think.

This is one of the best movies I’ve seen in a very long time. You have to go and see this on the big screen.