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DIPPER backed away in horror as his enemy read the spell aloud. Clouds gathered and lightning the color of blue neon lights crackled all around. One hissing bolt nearly struck his madly chanting foe. The next came so close Dipper could feel his hair stand on end. The third came even closer - and the fourth struck.

Dipper screamed in agony as his adversary shrieked with chilling laughter over the thunder and gales of the rising storm...

Dipper Pines sat bolt upright, screaming his head off. His twin sister, Mabel, jolted awake beside him with a startled yelp. "THOSE BURRITO BITES ARE MINE, FOOL!"

Dipper stared over at her, panting. Slowly, he began to relax. It was just a nightmare. He sighed and gave his twin a concerned look. "You okay, sis?"

Mabel frowned, blinking rapidly in confusion at her hands. "Wait, huh?.. What happened to... and that guy... that guy who wanted my food..."

Dipper chuckled. "Sounds like you were having some dream."

"Aww..." Mabel appeared mildly disappointed. Then she tipped her head at Dipper. "What about you, bro-bro?" She rubbed her eyes sleepily. "You look way more weirded out and sweatier than usual..."

"I'm fine, Mabel. I just had a nightmare, is all." Dipper lay back down and tried to go back to sleep.

Mabel lifted her chin and shuffled over to him on her knees. "What about? You wanna talk about it?"

"No, Mabel... thanks, I..." Dipper mumbled, already drifting off again.

Mabel was quiet for a moment, and, for a moment, Dipper thought that she actually might not...

Mabel seized him roughly by the shoulders and began to shake him furiously. Dipper's eyes flew wide open and he began to yell in a desperate panic.

"M-A-A-A-BEL YO-O-OU'RE SH-A-AKING MY-Y-Y EYEBA-AA-ALLS O-O-OUT!"

Mabel released him. "DIPPER! ARE YOU AWAKE NOW?!" she hollered into his face, eyes stretched to nigh-inhuman proportions.

"Very much so!" Dipper confirmed, sitting up dizzily. "W-What's wrong?"

Mabel stared at him for a second, wide-eyed. Dipper had never seen her look so distressed, and they had once fought a giant monster that wanted to destroy them. (Actually, one... two... oh, and that giant robot...carry the shapeshifter...)

Then she pointed.

Dipper followed her gesture, his eyebrows scrunched together, then gasped in sheer horror.

Above them, blotting out the stars, were the silhouettes of huge apartment buildings, skyscrapers, and the hazy orange glow of metropolis lights.

Dipper slowly stared back over at Mabel, who gazed back at him, terrified.

"I don't think we're in Gravity Falls anymore, Dipper," she whispered.

Dipper nodded slowly in agreement, deciding not to let the cheesy reference undermine the horrible severity of the situation.