Prologue
Gravity Falls, Oregon, a mysterious place where the paranormal and magic is.
Two optimists twins named, Dipper and Mabel Pines are staying at their Great Uncle's for the summer. One day, Dipper uncovers a mysterious book labeled #3. He learned about Gravity Fall's dark side and the book warned him to Trust No One. Ever since he found journal #3, he and Mabel have been in insane, abnormal adventures such as meeting a fraud psychic, gnomes, ghosts and much more. One day, a tragic event happened to the twins that they would never forget…
The two Pine twins were going on an adventure; they wanted to discover another supernatural creature before they leave. Yes, today they were going to leave Gravity Falls and come back in three years. Dipper and Mabel were really sad about leaving because they really liked it there but they knew it was time to go home soon. The Pine twins were in a deep eerie forest discovering a rare creature that said to grant a wish.
"Dipper, are you sure this is the location?" Mabel asked.
"Yeah, I checked the book, it should be here,"
Dipper took out his book and flipped to the page of the rare creature that they were searching for.
"Great, the creature will come out only at night," Dipper groaned.
"But we will be leaving," Mabel whined.
The twins groaned and then headed back to the shack. Until, everything turned gray and then the twins saw a yellow isosceles yellow triangle with a black hat and bowtie.
"Bill!" The twins exclaimed.
"We meet again Shooting Star and Pine Tree!"
"What do you want?" Mabel muttered.
"Well, I need one of you guys to come with me," Bill said.
"Why should we come with you? You went inside of our great uncle's mind you demon!" Dipper spattered.
Suddenly, Bill started to turn into a red big gigantic triangle which started to scare the twins.
"YOU ARE COMING WITH ME OR ELSE I WILL SEPARATE YOU!" Bill demanded.
"No!" The twins replied.
"So be it, Shooting star you are coming with me," Bill announced.
Bill used his demonic powers to grab Mabel and then headed to a gray portal until…
"Wait," Dipper sighed.
"What is it Pine Tree?"
"Take me instead, leave her be,"
"What? No! Dipper don't!" Mabel screamed.
"Sorry Mabel, I want you to be safe and who knows what Bill will do to you," he sighed.
"Ok then, Pine Tree you're coming with me!"
Bill grabbed Dipper and put Mabel back on the ground then headed to the portal.
"Pine Tree, any last words?" Bill added before him and Dipper leave.
"Mabel, goodbye… forever," Dipper sniffed.
Bill and Dipper entered the portal and vanished.
"Dipper…"
Mabel started to cry and rushed to the Mystery Shack.
Mabel was in her and Dipper's room crying for numerous hours until Grunkle Stan comes in the room.
"What's the matter kid?" Stan asked.
"Dip…Dipper is gone," Mabel muttered.
"How did he vanish?"
"Bill, Bill took him,"
Stan started to remember that this has happen the same to his twin brother Stanley.
He and Stanley were trying to fight Bill to keep him away from the portal.
Stanly was just like Dipper, very protective, he sacrificed himself to go with Bill and disappear forever.
Stan wanted to tell Mabel the truth that he was collecting the books to activate the portal to help defeat Bill but he decided not to. Grunkle Stan comforted Mabel until her parents came.
Mabel said a sad goodbye and left with her parents. Her parents were very devastated that Dipper was gone and couldn't be found.