There's a bubble around Gravity Falls, trapping Bill and his goons, and it's shrinking. Will Bill have to ally with the town against a common enemy? My own version of the series finale. Spoilers for W pt 1 and 2. All characters belong to Alex Hirsch, not me.

Chapter One: Trapped

"Alright, can anyone explain to me why, even with our new-found INFINITE POWER, none of us can escape the borders of this STUPID HICK TOWN?" asked Bill.

Bill threw bolts of lightning around the throne room in rage, as his minions cowered.

"There's some kind of force field keeping us in, but who would know how to fix it?" Bill asked. He stared at the golden Stanford Pines he was holding, his eyes flashing with the pages of the Journals. "Hmm. Maybe someone needs to come out of retirement."

Keyhole said, "Bill! Uh, sorry, Boss, but Gideon let the Pines family escape! They're inside Mabel's bubble as we speak!"

Bill laughed. "Buddy, Mabel's bubble is the most diabolical trap I've ever created. It would take a will of titanium not to give into its temptation. Fetch me Gideon and take the rest of the day off. Things just got a little more interesting."

Gideon was dragged before the throne in chains.

"Ah...Ah'm not afraid of you," blustered Gideon.

"Then you're even more of a fool THAN I THOUGHT," said Bill, looming over him. "The only reason you're still walking around and not part of my throne with your fellow felons is that I haven't thought of the most fiendish and painful punishment for you yet."

"Mah Mabel will know ah died a hero for her," said Gideon.

"I doubt it," said Bill. "Once Pine Tree and his buddies succumb to my temptations in her prison bubble, they'll never think to tell her anything."

"They're stronger than you think," said Gideon.

"We'll see... But discussing my prisoners is not why I had you brought here. I find myself trapped by a stupid orange force bubble from invading the rest of this ball of mud. The people most likely to have done it are people with knowledge of the Journals. I'll start with you. Did you set up this containment sphere?"

"Not me," said Gideon. "Ah don't know enough. About all Ah got from Journal 2 was how to use the amulet and how to summon you."

"Figures," said Bill. "I guess I'll have to un-goldify my back-scratcher."

With a wave of Bill's hand, Ford came back to life.

Ford lowered his hands. "So, what's the riddle? Why did the old man do that?"

"Never mind, Sixer," said Bill. "It isn't funny any more."

Ford looked around. "Where am I?"

"My castle, the Fearamid."

"And what have you done to all those people?" asked Ford, pointing at the throne.

"Just a little throne for me," said Bill. "I've always liked the idea of sitting on humans. I was planning on making it a lot bigger, but there's a little something stopping me: a force field around this town. You set this up, didn't you?"

"A force bubble is keeping you contained? Ingenious. I wish I had thought of it."

"Take a closer look at it," said Bill. With that he levitated with Ford out of the Fearamid and right up to the force wall.

Ford touched it. It rippled, but his hand couldn't pass through.

"It appears to be temporal energy. Your one other weakness," said Ford.

"How do I take it down?" Bill demanded.

"I don't know," said Ford. He placed his hand against the wall again. "I can feel it slowly shrinking. If this keeps up, all the matter in this region will eventually be crushed tightly together. No physical beings will survive."

"I'm immortal. I don't need a physical form to stay alive," said Bill.

"That is correct, but you'll be contained in a small space with nothing to do for eternity," said Ford.

"Anything but boredom!" said Bill. "That's the worst."

"You could leave the way you came," said Ford. "Back through the rift."

"I really don't like that idea," said Bill. "But perhaps I need to regroup. You're coming with me, though. I don't trust you not to try to close the rift while I'm gone."

Bill floated up to the X-shaped hole. He tried to go through, but he found the same force still held him back.

"Now what?" said Bill with a touch of desperation in his voice.

"The sky has been this same yellow-orange color from when you first started Weirdmageddon," said Ford. "I think someone anticipated your arrival, and you were trapped from the very beginning."

"How is that possible?" said Bill.

"I'll help you find out, but only on the condition that you free all of the people and undo all of your damage."

"Curse it that I lost my future vision when I took physical form in this dimension, or I wouldn't need any of you," said Bill. "You've got a deal."

Blendin Blandin appeared near a cliff overlooking the town. Agent Dundgren was standing there.

"Agent D-Dundgren, sir, everything went wrong!" said Blendin. "Bill Cipher destroyed everyone, even the Time Baby. I'm the only one left alive to report back here to our emergency back-up rendezvous space-time coordinate."

The Time Baby appeared with a pop.

"Don't worry," said the Time Baby. "Everything is proceeding according to plan."