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He had no idea where the fuck he was. It looked like Gravity Falls, he recognized some of the buildings, but that was it. He saw the water tower walking around and attacking other buildings. It had a mouth and a big tongue. It grabbed animals with it, like deer, and ate them. Bats with eyes as bodies were also a target for this monstrosity. The waterfall of Gravity Falls was dark and moved into the air.
Not to mention the sky was colorful. No blues, oranges or reds, but green, neon colors and glowing. Birds weren't bothered by it, they didn't even move. They looked like time froze. But if that was the case was hard to tell, the clock of the tower was moving extremely fast, backwards at that. This was crazy.
He woke up, sweaty. Dipper looked to Mabel's bed, wanting to talk about this fucked up nightmare. But she was not there. He remembered, she was at a sleep over at Grenda's house for once. Not here.
Dipper knew he could not sleep, not that it was worth for the few hours until he would wake up normally. Albeit, he did stay up for long, very long. He will be tired today, he knows it. He decided to wake himself a bit with cold water.
He somewhat enjoyed not to have to worry about Mabel barging in when using the bathroom. Starring into the mirror, he saw himself. But he was off. Not his tired looks, but his eyes.
They glowed and had slits. Like Bill's, but his were glowing blue, not yellow.
Like expected, Dipper was very tired. He could not sleep, his mind was too busy deciphering the dream, no, nightmare and his eyes, Considering that the later didn't last long, they only flashed for a few seconds, this could be a hallucination caused by either whatever caused the nightmare or his sleep deprived mind wanted to fuck with him. This will be a long day. He spend a while in their room, taking notes about the nightmare and eyes in a small notebook, a cheap spindle one.
He saw Mabel returning from Grenda's, so he decided to go down. He walked into Stanley explaining Stanford's past to Soos and Wendy. While they have known about him about a while, they still get some things wrong regarding the author. That and confusing their names. To be fair, Stanley used his brother for a while, which includes the time Wendy and Soos knew Stanley.
“Now that is this cleared, for a week, I want to shre something with you.”, spoke Stanford. “My machines tracked an energy wave last night, demonic energy. The readings remind me of Bill Cipher's energy. I need your help to check a few other trackers in the woods. Including that bunker you found.”
“You can count on us, Ford!”, agreed Dipper.
Ford wanted to reply, but he stopped himself. Then he said, “No, Dipper. I know for a fact you hadn't slept last night seeing your state. You will rest today and leave this to your sister, Soos, Wendy and me.”
“Okay, Ford.” Dipper was too tired to argue with Stanford.
A few hours later, Dipper woke up again. He was still a bit tired, but he was very thirsty. He walked to the kitchen and took a glass of water. On his way back he heard them talking in the living room. He heard Wendy ask, “Wait, wait, this Bill Guy has a son? Why would a demon have one?"
This caught his attention. Bill Cipher has a son? He didn't even know demons could have family, let alone want one, unless...
Ford answered her, “I'm not sure, especially since my best guess would contradict so much we know about him... The point is, Bill has a son, hidden from him. He can't know where the boy is, who he is."
Mabel chimed in, “We need to help him!"
“And risk to lead Bill to him?", countered Ford, “No. We can't do that."
"I don't get how you even know about the kid.", complained Stan, “You were gone for over three decades!"
"When Bill and I... worked together, he was in panic for a while. He said a few hostile demons want revenge. He often mentioned to hide someone.", explained Ford, "When he was back to his old self, I asked how he fixed his problem. Bill said, he send them into a different time, in the future, even if he won't be with his son for the time being. I was quite surprised that demons have family or care for others."
"Okay, but I meant how you know that he is here? And well, him.", asked Stanley.
"The energy wave from last night. My machines collected its signature. It is like Bills, but different. I worry the wave attracts Bill, to us, to him.", answered his brother.
Mabel wondered, “So, ignoring the situation and hoping nothing happens?"
"Yes... I have no idea what to do, besides keeping an eye on him. Mabel, would you check on your brother? I'm sure his nightmare resulted from the wave.", said Ford.
Dipper made his way back to his bed. He heard Mabel walk in, he pretended to sleep. It worked on her, of course it did. But he was far from sleeping, his mind was racing. Bill has a son, a son hidden somewhere, and Ford knows where he is, and who it is. Who... is his son pretending to be someone else? And the nightmare, his eyes.
“My eyes... am I? No, can't be. It was probably just an effect of the energy wave. Not to mention, that would mean I'm adopted, if my parents are someone else, right? I can't be adopted. Unless Mabel is, too. On the other hand, why didn't they tell me about this, then?”, Dipper's mind was busy processing the possibility.
Unlike Dipper, Ford knew instantly that his dream was under demonic influences. He was more annoyed than anything. “Cipher!”, he yelled, “What do you want now?”
“Oh, Sixer, I'm just excited! I wanted to share the good news with you, old friend!”, announced Bill, floating into Ford's field of view. “I will soon reunite with my son, soon! Isn't that great? Alcor will be a great help for my plan! You Pines can barely handle me, let alone two of us!"
“What makes you so certain about this?”, asked Ford, “I remember that you said you don't know into which time he was send.”
“You know about the energy wave. It was the first announcement of Alcor's powers manifesting! When he was send to the future, he wasn't fully formed. He apparently fused with a human baby. The demonic powers surpassed the human body.”, explained Bill. "His full power will awaken on his true birthday! Which is soon! If my math is right, which it surely is! It's my math after all! Haha hahahah!"
And with that, Ford woke up. He rushed into the shop where Stan, Wendy, Soos and the twins were working. He really needs a clock down there in the basement. He told them they need to talk. He didn't really notice Dipper, who was hidden behind a rag. Dipper stayed there, intentionally eavesdropping. Stan closed the shop, no costumers were there anyway. Ford told them about his dream, about what Bill said.
“I'm not gonna lie. I have no idea when Alcor's true birthday is, demon time works differently after all nor that Bill told me and I have no idea what to do when his powers activate.”, admitted Ford. “We just can hope that Alcor doesn't join Bill.”
Dipper still behind the rag that holds some of Stan's merchandise felt a burning pain. He yelped and fell into the rag, alarming the others of his presence. Mabel ran to his side, worried about his pain. Bill's summoning cycle appeared under Dipper, Mabel stepped away from him. Another, but smaller cycle appeared on his palms. They glowed blue like his eyes yesterday morning. Spreading from these cyrcles, like veins, were blue lines down his arms. Dipper starred just at them in shit. Does this mean his worries are right.
The world turns monochrome. Bill Cipher appears and floats around Dipper.
“Well, well, Pinetree is my son, what a twist! What a twist!”, he said, “But this will make things easier, Alcor.”
“T-This can't be! How am I your son?”, wondered Dipper frantically, “Mabel-”
“Oh that! When you were send into the future, you weren't a fully formed demon, you were just energy. You fused with what would have been Shooting Stars still born sibling.”, explains Bill nonchalantly, “Which also means you're half siblings. Now come with me, Alcor!”
Bill opened a portal. He grabbed Dipper and dragged him though it. Stanford tried to fight Bill, but Bill just created a cage made of energy around them, keeping them away from Dipper.
The two demons leave the Pines worried for Dipper. Mabel runs around the shop. “We need to do something! We need to do something!”
“I know! I'll try to com up with something!”, said Ford.
“You have to!”, Mabel yelled.
Bill brought Dipper to something that just could be described as a massive golden mansion, decorated with the weirdest shapes in existence. But with no real symmetry, no rhyme or reason for anything. Looking outside of any window didn't help. The Mansion was floating in a void of nothing.
“Why did you bring me here?”, asked Dipper the demon.
“Simple, you're my son, you belong to me.”, said Bill, “And someone has to teach you how to use your powers, don't you think?”
While Dipper didn't agree with the belonging part, he admits in would be better to control his powers. He has a feeling if he looses control, the pain will be equal or even worse than the wakening of his powers.
“No, I want to go back home.”, said Dipper. “Bring me back.
Bill sighed, “This is your home.”
“No? The Shack is my home, wherever Mabel is, is my home.”, countered Dipper, “We were raised together. This, you are strange to me.”
Bill sighed again, “This will be a draining time to come.”
After a bit, a lot of arguing, Bill managed to convince Dipper to learn about his demonic heritage.
“Where to start, where to start... I explain how our home dimension is build. Well, the societal structure. Our home dimension has a very strict and oppressive structure, the ranks are based on the shape of a demon.”, explained Bill, “Which is why I want to conquer a dimension to be free in and not be oppressed. Triangles are the lowest rank.”
“Man, that sounds like racism!”, said Dipper, “Wait, you're the lowest rank?”
“Was. I, um, destroyed our region in an attempt to liberate it.”, explained Bill sheepishly. “Due to this, some surviving demons, as well as other species of demons, want revenge on me. Which is why I send you away, Alcor.”
“I guess that makes sense.”, said Dipper, who started to get annoyed to be called Alcor. “But one thing doesn't why did you had me?”
“Well, like I said, I destroyed our home dimension, I killed pretty much everyone, including my family.”, admitted Bill, “I just wanted not to be alone.”
“Great, I'm related to a murderer.”, muttered Dipper.
Once again, Bill sighed and said, “Anyway, time to unlock your demon form! I wonder what shape and type of demon you are!”
“Different type?”, asked Dipper.
“Well, we demons also need two to make a new one, but because I'm the only dream demon... besides my brother, I had to look in different dimensions.”, explained Bill, “So you may be an astral demon. Probably still a shape, because I'm your primary parent demon.”
After what feels like months, but probably wasn't, Dipper managed to unlock his demon form. He was a simplistic pine tree shape.
“I did not expect you to be a shape that is not included in the hierarchy, or blue.”, said Bill, “I have no idea if this is good or bad. But it is good that you're already anchored in the third dimensions.”
“What does this mean?”, asked Alcor.
“This means you can access your full powers in the materiel third dimensions. Well, and it may highers ones ranking. This is a big deal for energy based demons!”, explained Bill excited, “Which is why I tried to take over your body. Sorry.”
“Already forgotten.”, said Alcor. “Now that I have a hang of my powers, can I return now?”
“I really do not want you to leave.”, said Bill.
Bill's body then flashed.
“Oh shit, other demons are approaching and it does not feel like Will!”, said Bill, starting to panic. A wall of his mansion was broken and demons came in. Demons of different shapes and colors, but none were triangles. They were squares and rectangulars. As well as a few hexagons, Octagons and a tetraeder?
The tetraeder, blue in color, came closer. “You think you can hide, Cipher, but wrong you are. And who is this young demon on your side?”
“Who this is is not your business, Codeira!”, yelled Bill.
One of the hexagons spoke up, “Oh, I think this is Ciphers rumored son! A Mind demoness surrogated for him once.”
“A son, Cipher? With a mind demon at that? You're really a disgrace for our society. Couldn't you have used a dream demon?”, spoke Codeira the tetraeder. “I know that you like the oddities, but a tree shaped demon? Even a freak for your standards, Cipher.”
“Don't you dare to talk about my son like this, Codeira!”, threatened Bill, glowing red. He grew in size.
Codeira was not impressed. “Don't you dare to attack me. Unlike you, I'm anchored.”
“Alcor, run.”, said Bill.
“What?”
“I said I don't want you to go, but I don't want them to end you either.”, said Bill. “Now run, Alcor!”
Bill opened Alcor a portal. Alcor flew in and it closed an instant. He looks around and saw where he was, Gravity Falls. He saw the town and flew into an alley way. He turned into his human form. No changes. If he remembers his lessons correctly, this means not much time passed in this dimension at all!
He made his way to the Mystery Shack.
Dipper knocked on the door of the Shack. Mabel opened and hugged him, nearly squeezing him to death. She yelled, “Dipper is back!”
Dipper now knows what that dream was. It was a vision of what Ford calls 'Weirdamagedon'. Bill ripping into their dimension.
What he didn't see the wacky Shackatron they used to fight Bill. He was in his demon form, flying around the Shackatron.
“Alcor!”, yelled Bill.
“I may be your son, but I don't agree with you!”