Hello, everyone! This is Jameer14. I really hope that you all like this new fan fiction, because I'm really excited about it. Please be sure to review at the end of each chapter to let me know what you think. I really appreciate it when you do. One more thing, I thought that it would be fun to put codes at the end of each chapter the way the real series puts codes at the end of each episode. You can decode it if you want, but you don't have to. The way to decode this one will be ROT13. Without further ado, here's Chapter One. Enjoy!:

Chapter I (Prologue)

Grunkle Stan walked into the attic where Dipper and Mabel were playing Monopoly. Currently, Mabel had the most money and the owned the most properties in the game while Dipper was stuck in jail.

Stanford looked down at the twins. "Are you really playing this bull crap?" he asked. "Why aren't you playing Mystery Shack Monopoly?"

"Because it's no fun if you always win, but aren't even playing," replied Dipper as he rolled the dice.

Grunkle Stan sighed happily. "I love that rule," he said. "Anyway, I have an assignment for the two of you, so put the game away."

"Awwww, come on!" complained Mabel. "I was getting ready to win my fourth straight game."

"Well, I guarantee to you that the assignment that I send you on will be fun," said Grunkle Stan. "I need the two of you to go out into the forest and find some squirrels for my new attraction."

"Yeah, this will totally be fun," said Dipper sardonically. "Even better than the time you made us catch raccoons and dress them up as goblins for a different attraction. I could find totally real attractions that wouldn't rip people off!" He put his hand on the 3 book in his vest.

"Hey, no talking back," snapped Stanford. "Now go! I'll be sending out Wendy and Soos out there too when they arrive for their shift in an hour." Grunkle Stan ushered the twins out of the attic, down the stairs and through the front door.

Dipper and Mabel walked reluctantly into the forest, keeping an eye out for squirrels.

Mabel clucked her tongue. "Here, squirrelly, squirrelly," she said. "Come out, come out wherever you are."

"You know what would make this easier," said Dipper as he walked. "Nuts as bait. And maybe traps to avoid getting rabies. But of course, Grunkle Stan fails to provide us with either one of those."

"Wait, Dipper," said Mabel. "Do you think that catching the squirrels is against Oregon law?"

"It's probably as illegal as it was when we caught the raccoons," Dipper answered.

Suddenly, he tripped on one of his shoelaces and fell forward. His chin slammed on something metal. Something metal?

Mabel laughed. "That should teach you to tie your shoes," she said. "And wash your clothes while you're at it."

Dipper did not respond. Instead, he ran his hand along the metal that was covered with dirt and leaves. His hand came across a handle.

Mabel noticed this and asked, "What's going on, Dipster? Did you discover something?"

"I think so," replied Dipper. He pulled on the handle and a two by two foot trapdoor opened.

"Whoa!" breathed Mabel. She looked into the hole and saw a ladder on the wall leading downwards.

Dipper looked down the hole. "After you," he said, gesturing to Mabel.

She descended down the ladder first, followed by her brother.

When they were about twenty feet underground, the twins reached the bottom of the ladder and stepped onto dirt.

There wasn't much to see, since the only light came from the opening twenty feet above the twins.

"I think that we're in some kind of underground hideout," said Dipper. He felt his way along the wall for a light switch. Less than two seconds later, he found it and flipped it.

Several ceiling lights turned on, illuminating the lair. It was about the size of a regular classroom with five scattered lab tables. On one of the tables there was a manila folder and a small, neat stack of printed paper. The rest of the tables were empty.

On the left wall of the lair, a screen hung from the ceiling and came a foot short from touching the ground. In the center of the room, a projector aimed towards the screen also hung from the ceiling.

On the other side of the room from the entrance, there was a silver, metal chamber in the wall. It was six feet tall, seven feet wide, and twelve feet long.

Dipper immediately made a beeline to the manila folders on one of the lab tables. He skimmed through the papers and the folder.

"Wow," he said aloud. "These papers are talking about a League of Heroes and a Villain Cult. This is really amazing. Mabel, you have to check these out!"

He looked at his sister, who wasn't listening to him. Mabel had gone inside the chamber and was pressing buttons in a panel on its wall.

Dipper put the papers and the manila folder into his vest and ran to his sister.

"Mabel, you can't just go pressing things!" said Dipper. "We don't know what this thing does. It could be an extortion chamber!"

"Sorry, but this is just really cool," said Mabel. "Look at those! I wonder what they do!" She pointed towards the back of the chamber where an open case filled with spheres made of hard glass sat on a simple wooden table. Each sphere was the size of an apple.

"I do admit, all of this is really cool," Dipper said. He pressed his right hand against the wall and leaned on it."

Mabel stared at her brother. "Dipper," she said slowly. "You may not want to do that."

Dipper gave her a confused look. "Why not?" he asked.

Mabel pointed at his hand.

Dipper looked at it and saw that he had his hand pressed on a button labeled ON.

"Yikes!" said Dipper. He yanked his hand off of the wall and immediately, two doors closed the twins in the chamber.

"No!" shouted Mabel. She and her brother ran to the doors and banged on them.

Several lights on the ceiling, walls, and floor turned on. Each set were lined up in a straight line leading to the back of the chamber.

"I don't like the look of this," said Dipper, frightened.

Two bolts of lightning arced down from the ceiling. One hit Mabel, the other hit Dipper.

The twins screamed as they were electrocuted and something small and hard slammed into each of their chests.

FCBVYRE NYREG! QVCCRE NAQ ZNORY NER ABJ UNYS EBOBG, UNYS UHZNA. ARKG PUNCGRE VF NGONFU'F GHEA!

~Jameer14