Hi! I got the idea for this a while ago.

I don't own Gravity Falls or anything associated with it.

Please read and review! That would be awesome. I'm actually only a few paragraphs away from finishing the second chapter, so it'll be up maybe even tonight.

Prologue

It was a night that would decide their world's fate.

Ten men, all in their group's traditional robes, pulled their hoods over their heads. Tonight they would have to attempt to prevent the destruction of everything they know. The red cloth of their robes appeared brighter in the misty darkness.

Corvus, the leader of their important group, slowly walked forward. His hood was still down, folding at his shoulders. "Today," He said with a deep voice, raising his arms, "We will have to carry out the plan."

His voice resonated throughout the forest, sending shivers down everyone's spines. They all knew of what would become of them during this plan, but decided to ignore it for the sake of this plan. They all mumbled their approval except for one man.

"Impossible! This is impossible! Do you not realize the sheer power you are hoping to contain?" He looked at his leader with terror on his face. He is one of many who have seen such unspeakable horrors.

"If we do not try, then the consequences shall be devastating. We all know of his plans. And of course I know what he can do. I believe I have found something that will finally work." He looked around at everyone, making sure they knew what they were up against. Everyone solemnly stared at him, hiding most of their faces under their hoods.

They were the original Society of the Blind Eye, founded in 1457. Their name carved fear in everyone's hearts. But they were not the ones to be feared.

The leader kneeled down to light the candles carefully, lest he destroy the circle of markings around them. The trap. It was the strongest devil trap they could create, but even it wouldn't hold long against him.

Corvus lit the last candle. All eight shone brightly in the dimness of the forest. He held up an old book of incantations, and recited the summoning spell.

"Triangulum, Entangulum, meteforis dominus ventium,meteforis venetisarium!" He shouted to the sky. The candles blew out as an unnatural wind blew through, shaking the trees violently. The men held their hoods on. It was customary for rituals. They gazed up to the dark sky and saw a triangle shape, outlined by flames, appear above them. It was impossible for the demon to refuse a summoning, even if he knew who his summoner was. Everyone looked down, as their leader would be the one to speak with him.

An eye in the triangle opened. Seeing the men in robes directly below him, he converted himself to his normal shape, top hat and all. Immediately upon the demon appearing in the trap, it activated.

Corvus stood still for a few seconds before raising his hand in the air, signaling the others to be still. The circle trap began glowing red and formed an invisible, thin barrier around the triangle. He narrowed his eye in amusement.

Their leader stepped forward. "Demon, we are well aware of what you plan to do to our world. As our world's only true protectors, we cannot allow you to continue with your plan." His face was a mix of hatred and something else.

The demon narrowed his eye, still amused. "I see. So are you people some sort of wizards? Are you going to wave a wand at me or something, or do you actually have a reason to summon me?"

Corvus got a confused look on his face, as did everyone else. Ignoring the first part of the demon's speech, he replied, "We have an obvious reason. We are to prevent you from destroying us."

"How?" The triangle poked at the thin barrier, making ripples in it. "With this pathetic excuse for a trap?

You guys have always been hilarious." He glared at them, glowing brighter yellow.

Fearfully, some of the men bent their heads down, forcing themselves not to move. Corvus reassured them. "Do not be afraid. The barrier does seem weak, but it would still take much effort to destroy it. Remember what I have told you before."

The demon rolled his eye. "Again, hilarious. What did you tell them before? Now I'm curious."

The other men stood in place, some nodding to each other at their leader's words. Ignoring the dream-demon's words, Corvus looked up at him. Here it would all end. No more would they fear death by his hand. The leader opened the old spell book to the last page, where a sloppy note was written. A sealing spell for even the most powerful of creatures. But the triangle demon was different from even the more devastating of them. He had been unsure of if it would work from the beginning, but it was their only chance.

He held up the book, and began to recite a new incantation.

"Signa autem, malum coram, intra obiectum! Incarcerare eum!"

The other ten men began to shout,"Incarcerare eum!" after him, repeating it in a chant. The unnatural wind grew harsher as another spell took place. Taken by surprise, the demon looked around at them all, and looked down below him. On the ground, in the center of the ring of candles and the circle of the devil trap, was a book with a hand shape on it. For the first time since before he could remember, he actually felt helpless. The barrier was thin but would take a lot of power to escape from. The imprisoning incantation was already taking place. Would he be sealed away in a book of all places?

Impossible… where did they get that spell from? It's too powerful for their time. It's as if they…

Corvus put his hood over his head and raised his arms, chanting the same thing as the rest. Normally even a sealing spell as strong as this would not be able to contain the dreaded triangle demon, but they had all decided that they would be using something of their own to ensure his long imprisonment. Their lives. Souls used to strengthen a spell made the spell last much longer. All of their souls, totaling eleven, would ensure that the demon would not be able to escape for many, many centuries. And demons being creatures of darkness and evil, they are unable to break the bonds of a soul entrapping them.

"You are all insane. Do you even know what you are about to do?!" The demon shouted at them, panicking. They paid no attention, continuing to chant. Blue light wisped around the barrier, and the book lifted into the air. "Well… you obviously do…"

"You people… you don't understand anything. You will do whatever it takes to protect your world, but you can't stop its destruction." He looked at the book he was being imprisoned in. It was opening to several random pages. "And when I escape, I will ensure that your descendants will suffer. They'll suffer for your actions. None of man-made rituals can contain me for long."

His words did nothing to dissuade them. None of them faltered or lost pace with their chanting. They had all realized the importance of what they were about to do. In the future, they must have stronger incantations or rituals. They will definitely be able to hold him off better than they can, or so they thought. The book began to give off a bright white light and the triangle demon felt a pulling sensation. The spell was pushing him into the object, and their souls would act as the glue.

Souls.

One by one, the original members of the society fell. Light wisped out of them and wrapped around the book, binding it tightly.

"Haha, giving away their lives to prevent the inevitable… you gotta love humans sometimes…" The demon laughed. But at the same time, he felt a burning need for vengeance. How stupid he had been to laugh at them when they had been planning this all along. He had underestimated the group of the world's "protectors." His plans would have to wait.

It doesn't matter. Even if the binding lasts for a millennium, eventually some idiot will free me.