You are at that point in the game where you're going to ask where the rest of the story is anyway. At the point where you are, the story has stopped. You can't stop the conspiracy. For me, it eventually did something, as in the stop the conspiracy quest went away and nothing of importance stops it. I'm not giving spoilers, because there are no spoilers to give. That's the end of the line, the story isn't finished yet for early release. No saving your siblings, ect.
On release, the questline and story should be finished. Not yet.