Credit for the picture above goes to cuongdamtieutu123 it's awesome! Thanks^^

+Gravity Falls: Inside Mabel's Bubble+

Dipper, Wendy, and Soos continued to follow the others into Fairy territory. Dipper stayed silent during the following with Wendy and Soos who gave him a pat on the back from time to time.

"Mabel, Bill, we're here." Other Dipper says to the two.

The group of three saw the fairies flying around them with smiles. The little fairies lead them to some seats to sit down on and chatted along.

"Mr. Cipher and Dipper, it's nice to see you again. What do we own this pleasure of seeing you two?" A light purple fairy asked fluttering her wings in delight.

"Just came for a fun visit. I also brought my twin along." Other Dipper answers.

"Delightful!" The purple fairy smiled and she got an idea. "I know! Why don't you three should stay for tonight's Moonlight Dance!"

"Moonlight Dance?" Mabel asked tilting her head to the side.

A blue fairy came to her side and explained it to her. "It's a big dance party for us fairies and for anyone we invite. We dance under the moonlight and make wishes for people's safety as they go on with their lives."

"That sound so cool! Dipper, Bill! We should totally stay for the party!" Mabel excitedly says hugging her twin. "Please bro bro! Let's stay." She even gave him the puppy eyes.

Other Dipper laughed and nodded. "Sure sis, how about you Bill?" Looking over to the blond demon.

"Sure Pine Tree~ I've got nothing better to do at the moment." Bill shrugs his shoulders with a lazy smile.

"Yay! Moonlight Dance is a go!" Mabel cheered jumping up and down. The fairies laughed and led them more into their territory.

Bill went off with some of the fairies somewhere, leaving other Dipper and Mabel with the others to help set up for the Moonlight Dance.

Dipper, Wendy, and Soos planned on getting Mabel when she is alone so they could talk to her. They hoped it'd be soon so they could return Gravity Falls back to normal.

Hours passed and it was already dark in the sky. The sky is twinkling with stars and the moon was almost in the middle of the night sky.

"Hey Dipper! Have you seen Bill?" Mabel asked trying to scoop out Bill.

Other Dipper shook his head with a frown. "I haven't seen him since we parted and started helping the fairies." The brunet placed the last lantern on the tree and jumped off the branch.

"I wonder where he went." Mabel says and turned around only to bump into someone. She looked up and saw Bill with his normal wide grin showing his sharp teeth. "Bill!" She exclaimed causing other Dipper to look back at her.

"Hey Shooting Star! Heard you've been looking for me!" He says bending down to her height. "Need something?"

Mabel nodded. "I was wondering if you could bring one of my dresses from the shack here. So I could dance in one of them." She twirled around and posed with a smile.

Bill chuckled patting her on the head. "I've got a better idea Shooting Star." He looked behind Mabel and motioned other Dipper to come by her side. Other Dipper rolled his eyes, but still came over next to his twin. "Now both of you close your eyes~"

"Bill if this is another trick, then I'm gonna have the right to right hook you." Other Dipper sternly warns crossing his arms.

"Trust me on this Pine Tree. It's funny and awesome!" Bill assures  clapping his hands together.

Both Mabel and other Dipper close their eyes and wait for Bill's words to open their eyes again. The demon snapped his fingers together. The twins felt something change on their body.

"Now open!" Bill says with glee.

The twins open their eyes to see that their clothes has changed.

Mabel wore a pink two layered glittery gown that didn't touch the ground. Hooked around her shoulders is a lighter pink cape, with the symbol of a shooting star, falling to the ground. Her gloves were the same color as her cap, but without the glitter. Her hair stayed straight, but added in her hair is a pink glittery headband. A shooting star necklace appeared around her neck. Mabel's shoes became pink with 2 inch heels. "Whoa Bill! This is totally amazing and beautiful!" She says amazed and checked out her clothes.

The other twin was having more of a problem with his clothes. "Bill. What the heck am I wearing?!" Dipper growled out.

Mabel and the three hidden people looked towards other Dipper. His clothes turned out to be a dark blue flowy gown. His light blue cape hung around his shoulders too with a pine tree symbol and gloves. His black sneakers became dark blue flats. A black bracelet appeared on his wrist with a pine tree charm and a necklace around his neck with a golden triangle hanging from it.

"Looking lovely there Pine Tree~" Bill smirks at the brunet who blushed furiously.

"Not funny Bill." Dipper says harshly.

"Is this what you did while we were helping set up for the dance?" Mabel asked trying not to laugh at other Dipper.

"You betcha! Pretty neat right?" Bill says.

Mabel giggled and patted other Dipper on the back. Other Dipper sighed in defeat, he knew he wasn't getting out of these clothes until they got back to the shack. He rushed up to Bill try and right hook him, but the demon easily doged.

"Aww~ Pine Tree is this your way of thanking me?" The blond playfully says.

Other Dipper face palmed. 'It's useless.' He thought.

The fairies talked about the history of the Moonlight Dance and eventually officially start the dance. Everyone is talking and dancing in the little clearing under the Moonlight having a blast. Mabel danced with several fairies having the time of her life. Other Dipper did the same, but stopped dancing after his dance with his twin.

A yellow fairy came to the tall stage. "Alright everyone! Sadly this is the last Dance of the night! So please get with your last dance partner!" The fairy exclaimed. The fairies rushed to dance with their last dance partner of the night. Mabel had ended up with a grey colored fairy for her last dance of the night.

Bill smiled as he walked over to other Dipper who busied himself by looking up at the sky. Once he made it over to the brunet he tapped his shoulder. "Pine Tree~"

Other Dipper turned his attention to Bill who took his hand in his. "What Bill?"

"Dance with me?" The blond asked with a grin, tilting his head to the side a little.

Other Dipper blushed. He was experiencing a internal battle whether or not to dance with the demon. But Bill is already dragging him to the middle of the dance floor.

The music started and everyone waltzed around the clearing. The moonlight just right, shining down on area. Other Dipper's clothes swayed with his dance along side his partner. Bill gracefully lead other Dipper through their dance with ease.

The dance went on and Mabel finished dancing early. She saw her twin having fun so Mabel decided to head back to the Shack before them.

Finally at a certain distance away from the fairies and the two love birds, Mabel was captured.

+Gravity Falls: Inside Mabel's Bubble- around midnight+

"Mhmm!?" Mabel struggled in her captor's hold trying to get free. She even licked the unknown person's hand.

The person pulled their hand back. "Ew! Mabel, you know that's really unclean and weird." A familiar voice says to her.

Mabel froze and turned around to see her twin, bruised and scraped on his body. "Dipper?"

Dipper nodded slowly with a smile. "The one and only, but I'm not the only one here." Wendy and Soos appeared behind Dipper with injuries too. Wendy looking the most injured out of the three.

"Oh my gosh! What happened to you two?!" Mabel worriedly says checking her twin and friends while covering her mouth. "Dipper you were just with Bill though?" She says confused.

Soos shook his head. "Hambone, this is all an illusion made by the triangle guy! He took over Gravity Falls..."

"Mabel, dude, you have to come back with us. We need to save everyone or else the whole world will be under that demon's reign." Wendy says putting a hand on Mabel's shoulder. "We need your help too."

Mabel looked at them trying to understand. "Then what's happening now isn't real. It's all a big lie... Everyone's gonna leave me..." The girl softly says with hints of sadness. She fell to her knees and started crying.

Dipper went over to his twin and fell to his knees too. He gave her a tight hug. "I'm not gonna leave you Mabel. I'll go back to California with you, we'll continue to do crazy stuff together like we use too. I won't become uncle Ford's apprentice. I won't leave you alone, I'm so sorry about what I said before." Dipper's hug became a little tight. He'd sacrifice anything for his sibling, even his curiosity to study the supernatural. All for the happiness and safety of his sister.

Mabel hugged him back crying into his shoulder. "Dipper..." She mumbled.

Wendy and Soos gave Mabel a hug too went they both got back on their feet.

"I'll help guys. Let's return everything to normal." Mabel says showing her goofy smile again, wiping away her tears.

"So how do we get out of here dudes?" Soos asked looking around.

"Mabel could probably think of a way out. This is her bubble anyway, she could do anything she wants in her. All right Mabel, try it." Dipper says looking at his sister with a encouraging smile.

Mabel smiled back at him and began to think of a way out of her cage. 'Out... Out... A way out... Back to Gravity Falls...' She thought to herself.

A portal appeared mid air showing Bill's Weirdmageddon. Dipper walked up to it and sticked his hand though it.

"Come on guys! Let's- Whoa! Hey!" Dipper is being pulled through the portal. "Guys! Help!" Dipper yelled his other arm trying to grab someone for help.

Mabel rushed and grabbed Dipper's hand. Soos and Wendy grabbed Mabel and tried to pull Dipper back in.

But whatever was pulling Dipper from the other side is too strong. In one tug, the 4 of them were pulled through the portal.

Back into the apocalypse they go.

+Weirdmageddon: Outside of Mabel's
Bubble+

Dipper's wrist is being held up by something, no, someone.

"Well, well, well~ It seems Pine Tree, Question Mark, and Red did manage to bring dear Shooting Star back." A echoey high pitched voice says. Laughter could be heard behind the person.

The named 4 looked up to see Bill Cipher staring at them with his one eye.

"Bill..." Dipper said under his breath.

Bill laughed with his gang as Mabel's big bubble disappeared from behind them. He used his other arm to pull off the three people hanging onto Dipper and threw them in the air. Bill encased them in their own bubbles, but a little smaller.

Soos had a bubble with a question mark on it.

Mabel had her shooting star bubble.

Finally Wendy got her bubble with a ice bag symbol.

The bubbles were transparent so you could still see the people inside.

"Mabel! Soos! Wendy!" Dipper shouted and struggled to get out of the demon's grip. "Let me go!"

"Poor little Pine Tree~ Ya can't stop me kid! So give up!" Bill says narrowing his eye at the brunet. With a flick of a wrist, the journals got out of Dipper's backpack and were encased in their own bubble.

"No! Stop!" Dipper yelled struggling harder. Bill laughed again and Dipper glared at him.

"I won Pine Tree~ Everything is under my rule!" Bill cheerful voice says.

Dipper stopped struggling and was about to hang his head in defeat, but he wasn't going down without doing one more thing that would protect his friends and family. With determined eyes he looked up at Bill.

"Bill." Dipper says sternly getting Bill's attention again.

"What is it Pine Tree?~"

"Let make one final deal."

All for the safety of others, he'll make a deal.
Sacrificing himself...