It was pretty much the exactly same story as T2, but with a poor script and not nearly as good acting. And by poor script i mean that it really felt like the writers couldnt be bothered to do anything with depth, and couldnt bother to figure out the back story of the future.
Also, with so many time lines in the franchise, and each sequal ignoring and keeping whichever ones they feel like for that movie without even trying to explain what is going on, is becoming tiring.