Ford, Mabel, and Stanely watched as the chaos began. "Gravity Falls it feels good to be back," Bill shouted in a cheery tone.
"What do you mean?" Stanely said. "I've been in Gravity Falls for decades now and I've never seen you."
"Agh Cresent," Bill said. "You might not remember me, but I remember you. Same with you, six fingers and shooting star."
"What are you talking about?" Stanely asked.
"That's something I've been needing to tell you about," Ford said. "When I was in the other dimension, I saw a peek into another dimension. It was a timeline that was the same until Dipper and Mabel were separated. I think Bill went back in time to separate them."
"But why would he do that?" Mabel asked.
"I believe we defeated him in the first timeline," Ford stated. "If only I could remember how we did so."
That's when a large bubble appeared in the distance. On it was a pine tree. "Isn't that the same symbol on Dipper's hat?" Stanley asked.
"It is," Mabel said.
"That's a reality bubble," Ford said. "Bill must have gotten to Dipper."
"We have to get to him," Mabel said. "I can't lose him again."
"Well start heading there now," Ford said. "Then we'll figure out how to stop Bill."
They start heading to the bubble as Weirdmaggedon spread across the state.
Dipper was sitting in his classroom. It was right beside summer began. He was looking forward to another summer in Gravity Falls. "Hey freak," Steven yelled. "Are you going back to Gravity Falls? Can't wait to hear more of your lies."
"They aren't lies," Dipper said.
"Sure, you totally fought living gnomes and a triangle dream demon," Steve taunted.
"Leave him alone," Mabel said. That's when the bell rang and the twins left the room. As they walked home, Dipper appeared in the dreamscape.
"Who's there?" Dipper yelled. To his surprise, Mabel appeared.
"Dipper this is a trap set up by Bill," Mabel warned. "You have to get out of here."
"If you're truly Mabel, why are you in the dreamscape?" Dipper asked.
"Ford hacked into the code of the bubble," Mabel said. "This is the only way I can talk to you because if I see this timeline's version of me, a rift will be created. Listen, some demon named Bill has taken over Gravity Falls."
"How do I know that you're not Bill?" Dipper asked.
"If I was Bill, you couldn't touch me and I'd be in my Bill form," Mabel said.
"True," Dipper said.
"We need to leave so we can figure out how to stop it," Mabel said. She made a giant needle appear in her hands.
"How did you do that?" Dipper asked
"This is a reality bubble," Mabel said. "You can warp it to you're liking. Ford told me that."
"That makes sense," Dipper said.
"The entrance is this way," Mabel said. She then takes him to a weak place in the bubble. Mabel pops it with the giant needle. When they are out of the bubble, they noticed Dipper was just his soul.
"This must be apart of the deal I made," Dipper said.
"Well get your body back soon," Ford said. "First we should head back to the Mystery Shack to try and figure out what we did in the previous timeline to defeat Bill.