Plot was absolutely terrible and unoriginal. Yet one more movie to use AI as a villain. However, this AI barely does anything in the movie and it's most lethal weapon!?... ONE man who does its bidding... Also WAY too much emphasis put on a single key as if that was the only way to do anything about the AI. Also surprise surprise Ethan goes "rogue" again and the woman he cares about dies... The ending is really cheesy too. Not one, not two, not three, but FOUR train cars SLOWLY fall one at a time off a bridge and you just watch Ethan also moving slowly through each one and that's the ending of the movie, very cheesy and boring ending. Only reason it's not 1 star is because there is some decent action in the movie.