A/N: Did any of you notice the Easter egg I hid in the last chapter?

"Got everything in the pack?"

Sam checked the contents of their backpack while Dipper went through the list of things they needed for their adventure.

"Rope? Map? Flashlight? Compus? Water? Snacks? Camera?"

"Lets see...check, check, check, no, check, check, and check. We're missing the compus."

"Wha...but I just..." *Idea* "Hey Mabel, what did you do with the compus?"

Mabel was also coming with them, and was sitting on the edge of a desk, swinging her legs happily over the side. She got down once she realized her mistake.

"Oops, my bad."

She left the room and came back a moment later with the compus, wiping off a little glue and glitter from it. She gave it to her brother, who looked it over to make sure it was in working condition.

"Why did you even need this? And what's with the glitter?"

"I am great princess of arts and crafts, the president of the arts, the grand sensei of creativity!"

"Is that why you always have a glue gun stuck to your arm?"

Sam grinned, reaching under Mabel's arm and tearing the glue gun off. He placed it on the table, then continued.

"You didn't tell us why you needed it, but I'll just be glad we have it. That checks off everything on the list, time to head out."

Dipper and Mabel smiled at each other, it had been way to long since they had planned a adventure then gone out and done it. Sam slung the backpack on, Dipper studied the map, and Mabel aggressively straightened her tiger stripe sweater. They ran out the door of the Mystery Shack following the trail Dipper had marked on the map.

In The Forest

The kids walked through the forest of Gravity Falls, Dipper having developed a good lay of the land in a very short time and having the map, lead the way. The direction he pointed them lead uphill, not drastically but the constant climb was wearing them down. Sam wiped sweat from his brow as they stopped for a break.

"Wew, I miss having wings."

Sam's white hawk like wings were still broken from his fight with Azazel, and were being kept in binds that stopped him from manifesting them into the physical world until they were fully healed. Yesterday he had spent an hour doing nothing but watching birds fly, more then a little jealous that they could soar while he was stuck on the ground. It was starting to get to him. He had even started climbing to the highest point he could find just so he could simulate a view similar to if he still had his wings, but it wasn't the same and it only made him feel worse when he came back down.

Mabel took a long quaff of their water, and let the streams of liquid that slipped along her chin from the hearty chug stay there, the water felt good on her face. She then got Dipper's attention, by pouring the rest on his head.

"Ha ha! Stop it Mabel."

She stopped. But only because the water in that bottle had ran out.

"Hey Dipper, what are we looking for again?"

Mabel hadn't paid much attention to what he had told her about it, but to her credit Dipper didn't explain it very well. Dipper took out book 3 and flipped until he found the page. Sam paid close attention, he wanted to know more about it too.

"The book says something about a way to see what you'll look like in a few years. Ehm..."Local folklore of a mysterious cave that holds a mirror of sorts that will show a reflection of a older or younger version of the observant has been the main focus of my studies for some weeks. I had no way of finding the location of this wonder until a few days ago. A man ran into the town rambling incoherently about how he had looked into the mirror and saw nothing, and believed that death was upon him. It was because of his erratic pleas to the towns people to believe him, that he did not pay attention to the world around him and was hit by a vehicle as he ran into the street. After hearing this, and giving my condolences to his family, I questioned his close friends and discovered of a cave he had visited. A map of its location is enclosed in the following page."' *Closes book* "That's what we're looking for."

*Sam and Mabel in unison* "Coooool."

"I know, and it's not far from here, so we should get going."

Dipper's stomach made a galled noise of stern protest.

"After a snack."

They all scarfed down a few granola bars, and Sam dumped water on himself, letting it seep into his white shirt keeping him cool. Then they started walking again. They headed uphill for about ten minutes before they came to the opening of a cave (Gravity Falls seems to have quite a few of those). Dipper looked from it to the map, then placed the map in their backpack.

"This is the place."

Mabel turned on the flashlight they brought and went in. The cave went into the mountain and turned a few times on the way in. Then after about a minute they started to notice something.

"Peuw! What's that smell?" Mabel covered her nose. "It's like a skunk's diaper was rolled into a burrito and covered in salad dressing!"

"Eww, Mabel!" *Shudders* "Thanks for getting that image in my head."

"You're welcome, Brosef."

They kept walking deeper into the cave, and the darkness within it pushed in on them. Mabel held onto Dipper with one hand as she walked beside him, she did this for comfort from her brother (No joke. She does this in "Headhunters." It's pretty adorable). It got so dark that Sam made a white light appear to make seeing easier. They kept the lights up until they started to see that the darkness was becoming less abundant, meaning that the end of the tunnel was up ahead. They came out into a large cavern that was shaped like a dome, a large hole in the ceiling let light into the underground cathedral (Metaphor. Not an actual cathedral). Mabel gaped at the natural stone walls.

"Wow! This place is huge."

Sam looked at the ceiling without saying a word or moving his gaze.

"SCREEEEEEEE!"

Dipper and Mabel jumped at the high pitched piercing sound, Sam just kept his gaze on the ceiling and pointed up.

"I think I know where the smell was coming from."

The twins looked up at the ceiling and a little color drained from their face. On the roof of the cave a large number of giant vampire bats were hanging from it, and they were waking up. They let go of their hold and dropped, opening their wings and circling around. Some stayed in the air while others landed and started moving towards the kids, dripping nasty saliva through their big teeth.

"Get behind me."

Sam pulled Dipper and Mabel back and stood between the bats and them. He couldn't manifest his wings, but he still had a few tricks. A spark of light appeared in his eyes, then the shadow of his wings spread behind him without them actually becoming physical (If you're a fan of the show "Supernatural" then you probably know how awesome that looks). This was intimidating no matter what the circumstance, but it was particularly effective with the bats. A while ago Sam had thrashed a of swarm of giant vampire bats, some still remembered it and fled through the hole in the cave ceiling (If you want to read the time Sam took them on, read my first story "A Hidden Angel."). Unfortunately not all of them fled.

"SCREEEEE!"

One swooped down and went directly for Sam. Which was a mistake. Sam pushed with his mind, and the beast was thrown at another of the monsters. Dipper looked at Sam then Mabel, he pulled his sister back and armed himself with a nearby rock. He then said to Sam.

"Hey dude!"

He looked at Dipper.

"Kick their fuzzy butts!"

A wolfish grin took Sam's lips. That was all the motivation he needed. His right eye glowed blue, and his left eye glowed green.

"RAAA!"

He made his hands into fists and thrusted them up. Two of the bats were thrown up to the ceiling by Sam's power with such force that struck it and were rendered unconscious. Now Sam's whole body started glowing, right as one of the giant vampire bats rammed into his side. The monster bit him, intending to kill, but it broke all of its teeth on Sam's body, which now appeared to be made out of a polished metal that glowed with a inner light. The creature brought its head up, confused look on its freaky features, then it screeched in terror as it realized it couldn't hurt this pray. Sam's left eye glowed bright, and the bat was frozen solid.

Sam then turned to the next line of enemies, which were starting to lose their original ziel as there primitive brains began to process they were losing. His right eye started to glow with royal blue light, and when it did fireballs ignited in his hands. He hurtled the flames at the the bats, but they were so high up that he missed both shots.

"I REALLY miss having wings!"

One of the monsters dived, but not for Sam. This one went directly for Dipper and Mabel.

"I don't think so!"

Sam's right eye glowed again, and a shield of blue energy came up around the twins. The giant vampire bat crashed into the energy barrier and fell on the cave floor, completely disoriented. Dipper brought up the big rock he had picked up and smashed it against its head, knocking it out.

"I have an idea! Cover your ears!"

Sam said this as he ran to his friends.

"What is it?"

"Just trust me, do it."

Dipper and Mabel covered their ears as tight as they could, and with what Sam was doing next, that was a very good thing. Sam started glowing again, his eyes began burning with light, and his face looked like lightning. He had learned how to turn this power on and off awhile ago, so he could use it whenever he needed. He let his head back and let out a screech in his natural angelic voice, which sounds like thunder if it could speak.

A bat's hearing is very acute, and when a sound that intense is let out right next to them, it's like torture to the poor things. They flew around confused to everything and struck the walls of the cave as they sped without direction. They weren't the only ones who were hurting from the sound; Dipper and Mabel were right next to its source, and they winced with pain, taking a knee. Sam kept it up until all the monsters fled through the hole in the cave ceiling. Once they were all gone he let his voice return to normal, and his glow faded out of his body.

"Dipper, Mabel, are you alright?"

He helped them up. A little ashamed that he had hurt them.

"It's alright, dude. You saved our butts."

Dipper gave Sam a pat on the back.

"And it's way awesome how you kicked monster booty and saved us!"

"He he, thanks Mabel."

Dipper gave the cave a look over, and he spotted something on the other side.

"Hey guys. I think I see what we came here for."

Two pillars of stone curved over each other and twisted together into a solid archway. Inside it looked like a reflective silver mist was trapped.

"Cool, lets check it out."

All three of them walked across the cave floor to the other side, wondering what they were going to see. Dipper noticed on the side of the archway a stone dial was places and surrounded by romanumerals, the dial was currently pointing to 15. Dipper and Sam walked up and stood in front of the artifact, and viewed their reflection. Mabel gasped.

"O! M! G! You two are CUTE!"

Sure enough, the 15 year old versions of themselves were handsome. Sam smiled at his reflection, and it smiled back, looking as much an oddity as him: With shiny mismatched eyes that each had a beautiful color, and his natural ash grey hair. Dipper playfully punched him in the arm.

"Wow, dude. You're taller then Wendy."

This technically was true, but 15 year old him only had about half an inch on the lumberjack's daughter. Mabel pushed her way between the boys.

"Let me see."

Now standing between them was a teenage Mabel, and she looked very pretty in her colorful outfit. She took out a camera from their backpack, and snapped a picture of the three older reflections of them.

"This is so cool."