Dipper was standing outside on the shore of a lake when he finally turned on the camera. He was looking at it with a rather serious expression.

"Welcome back to Dipper's guide to the unexplained" he said to the camera, holding up the latest sign. "Anomaly number forty two: the tooth."

He turned the camera so that it was facing an enormous tooth the size of a shed sitting lopsided on the shore.

Mabel was standing near it, poking it with a stick, while (y/n) was just climbing to the top of it.

"We're here for scale!" said Mabel cheerfully.

(y/n) finally reached the top, and she stood up onto her feet. However, she suddenly started to lose her balance, and she waved her arms frantically and leaned forward, managing not to fall off.

"Hey, careful with that tooth!" Dipper scolded.

(y/n) put her hands on her hips and frowned.

"Oh, I'm fine, thanks for asking" she said. "But I don't matter, just as long as the tooth's okay."

Dipper sighed, then continued to speak to the camera.

"I found it yesterday while I was...practicing."

Yesterday, Dipper was standing on the same shore, but this time, he was playing a tuba that was larger than him.

However, he suddenly noticed something very peculiar further along down the shore.

He pointed in its direction.

"Hey, is that a giant tooth?"

Dipper was now right next to the tooth, putting his hand against its enamel.

"Strangely human, but it's gigantic" he said. "It's bigger than any fish or lake monster I've ever seen. And we're gonna find out where it came from."

Dipper turned on the camera again. This time, he was in the fishing shop of Tate McGucket, who was standing behind the counter with his back facing him.

"Tooth?" Tate was saying, as he put a few guns away. "No, I don't know nothing about a tooth."

"I'm thinking about paddling out on that lake tonight" Dipper said.

"Bit of advice, boy, you see bubbles on that lake, run" Tate said, suddenly with a rather serious tone.

"What, why?"

Tate finally turned around.

"No questions, get that camera out of here!"

It was night time when Dipper finally turned the camera back on. He was on the shore of the lake, and he picked up a flashlight off the ground and shone it on his face.

"I'm here at the lake to investigate" he said. "I brought Mabel and (y/n) for backup."

He turned the camera towards his sisters.

(y/n) held up an invention at the camera.

"I brought this rocket blaster, in case we need to make a get-away."

Mabel grinned at the camera.

"And I brought Bear-O, my adorable childhood puppet!" she said, holding up the hideous bear puppet, which had stuffing falling out of it.

"Hi-O!"

Mabel then turned towards Bear-O.

"Ain't that right, honey?"

She then acted out the bear puppet.

"Did somebody say honey?"

Mabel started laughing.

"Nope. Creepy. Bear-O's creepy" said Dipper, as he turned the camera away from Mabel and towards the boat they were going to take out onto the lake.

"Yeah, everybody hates Bear-O" (y/n) added.

Mabel shoved herself and Bear-O back into the camera's view.

"But guys, who could hate Bear-O?"

"I can think of a few people" said Dipper.

Mabel was now singing on a small stage with Bear-O, a sign next to her read "Bear-O the Great!"

"They're quite a pair,

Mabel and Bear-O

Her un-bearlievable bear!"

Bear-O's arm fell off at the end of the song.

The kids that she was performing in front of were all clutching each other as they cried in fear of Bear-O.

One of the kids bolted away from the stage, knocking over the camera in the process.

"I hate Bear-O, mommy! I hate it!"

"Aw, come on, you'll see!" Mabel insisted, as she hugged onto Bear-O. "You, me, (y/n), and Bear-O are the adventure team of a lifetime!"

Bear-O was now sitting alone on the shore of the lake as the triplets were paddling in the boat on the water.

Mabel had a rather grumpy expression on her face.

She had wanted to keep Bear-O, but seeing as it was two against one, she had no choice.

"Ok, something out there left that tooth" said Dipper, as he placed the camera on his lap so that he could row. "And we're gonna find out what it is."

Seeing that Dipper's attention was occupied, Mabel suddenly reached downwards and then held up a sign to the camera that said "Do you want more Bear-O?! Let your voice be heard! Write: Mabel Pines ℅ Mystery shack, Gravity Falls."

Dipper finally noticed.

"No, no, come on!"

"What are we supposed to be looking for?" Mabel whispered to her siblings.

"I don't know, just look out for bubbles in the water" said Dipper.

Mabel started to pan the camera around, when she suddenly found several bubbles forming near a modest island.

"Guys, look!" she said, pointing towards the bubbles.

(y/n) shone the flashlight towards the bubbles Mabel pointed out.

"They've over by that island!" (y/n) said.

Dipper turned towards his sisters.

"We have to see what happens!"

Suddenly, there was a loud, rumbling sound.

Dipper started to worry.

"Oh no, what was that?"

Mabel screamed, and pointed towards the tiny island, which was now trembling, causing the entire lake to rumble.

"Aaaahhhhh!"

"What is that?"

"It doesn't matter! Row! Row! Row!"

Mabel dropped the camera, and she and Dipper started to row frantically.

Meanwhile, (y/n) had pushed herself to the back of the boat, and was working on bolting the rocket booster to the end of the boat as quickly as she could.

The island suddenly rose up into the air, and it appeared to be a giant head. It was chanting indiscernible words as it floated towards them.

The giant head was now directly over them, dripping water all over the three of them.

"It's getting closer!" Dipper screamed terrifiedly. "(y/n), hurry up!"

"I'm trying!" (y/n) shouted back, as she pounded on the device.

"Keep rowing!"

The rocket booster had just powered on when the camera started to cut out.

Dipper was now wandering on the beach, searching for the camera.

"I don't know" he said aloud. "I've been looking for...there it is."

He hurried over to the camera, and picked it up off the ground.

"Okay, after that thing attacked us, that giant head thing just sunk back into the lake" he explained. "And it lost another one of its teeth trying to eat our boat!"

He panned the camera to show the remains of their smashed boat, which now had a giant tooth stuck in it.

Dipper then turned the camera so that it was facing himself and his sisters.

(y/n) shot a rather cheerful grin at the camera.

"Whelp, I'm scarred for life!" she said.

"Well, the important thing is that we survived" Dipper said. "Barely."

Mabel sighed sadly.

"Yeah."

She then bent downwards, and picked up Bear-O off the ground, holding him up to the camera.

"Did somebody say, barely?"

Dipper and (y/n) both screamed.

"Mabel, I swear I will burn that thing when we get back!"

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The next episode, "Dipper's Guide to the Unexplained: Lefty," is currently scheduled for release 5/26/18 unless otherwise posted. Thank you for your dedication