This movie is all over the place. It is essentially a zombie movie with robots instead. Most of the action scenes are people getting abruptly taken from places, just like in a zombie movie where the zombie jumps out and grabs an unsuspecting person. The other major issue I had was that no one in this post apocalyptic earth has seen a movie that featured a post apocalyptic earth. They all do such stupid things, just like characters in a zombie movie do.
The previews would have you believe that this is a John Connor movie. It is barely a john connor movie, and you'll barely care.