Prologue:
Dippers Life was new normal, there was nothing holding him back now, he was free from his duties to save gravity falls and so he aged, and he aged well. Even Pacifica was now his friend and they both were living a normal life, both at the age of twenty now. Sure, life was great and it was all normal but Dipper was missing the adventure, he wanted to do something and he was itching to get away.
The fact was that life was a slow leisurely walk, not even, more like crawling at the speed of a snail. SO Dipper did the one thing he always wanted to do and so he got off of the couch that Stan had sat on and walked out of the door to do what he had always wanted to do in his life, he unlocked the door taking in all the memories one last time, Mable, stan and everybody else. It crossed his mind to Stay, however, he rejected the thought quickly and left. He locked the door and went away.
His mind was completely full of thoughts, everything was done, he had completed his life so far. However, he had one thing that he wanted, a mystery and he had one thing he wanted to do right here and so he walked and he walked. He had abandoned the idea of taking a car since he would never need it again, not where he was going. He knew exactly where and even on the way he was still considering what he was doing. He crossed a pond, on the center of the bridge he looked at the murky water where he had once fought a mechanical dragon build by a crazy old person. His reflection was staring back at him. He reached into his pocket and took out the keys, he dangled them on his finger as if he was inspecting them for damage. Then with a flick of a wrist, he threw them where he thought they belonged, in the pond.
The waves distorted his face and so Dipper continued walking, not turning back once, his mind, was exactly as calm as it seemed and he does not even blink as he made his way to the other side where huge asphalt pavement stretched all over the ground. HE locked up from the gray pavement and saw the huge gateway with one simple N on it, however, this letter was decorated to its full extent, simple yes but ugly in no way. Everything was a beautiful white and the only thing that he had left was his dignity and so he opened the gates and entered this huge, massive complex. This is what his whole life was boiling down to...