Welcome back guys! When we left off, Wander and Sylvia had met Dipper and Mabel. In this chapter, the group of four will go to the Mystery Shack, and some other stuff will happen, too. Enjoy!

Dipper was in complete shock. Aliens actually EXIST, he thought. But, how?! Earth is the only planet that can contain life! "So," Dipper said. "Are there any other planets?"

"Why, yes, there are!" Wander said, excitedly. "Don't you know that?"

"Actually, no," Mabel told Wander. "As far as this planet knows, this planet plus the other eight planets are the only ones that exist."

"Mabel, Pluto is not a planet anymore," Dipper said.

"Yes, it is," Mabel argued. "If it's not a planet, then why does it-"

Suddenly someone came. Dipper and Mabel recognized him. It was Manly Dan, the lumberjack of Gravity Falls. Today he brought an axe with him. He saw Wander and Sylvia and looked shocked. Then he raised his axe and started running towards them.

Wander, Sylvia, Dipper, and Mabel thought one thing: RUN FAST! They all got on Sylvia and ran until they lost Manly Dan. Then they arrived at the Mystery Shack.

"I forgot to tell you," Dipper said. "On this planet, the species here don't take kindly to your kind. In fact, if they discover you, they will take you away and experiment on you. PAINFUL experiments. And they will never let you go."

Wander and Sylvia did NOT want that. They quickly understood him, even though Wander wondered why everyone here would like them.

"Just follow us," Mabel said. "And be VERY quiet. There are people in the gift shop."

"Gift shop?" Sylvia asked. "I thought this was a house."

"It is," Dipper told the Zbornak. "Our Great Uncle Stan turned this place into a tourist trap called the Mystery Shack. The real mystery is why anyone comes. All the stuff here is fake."

Wander looked and saw an exhibit called 'The Cornicorn.' It was obvious it wasn't real.

"Well, I can see why you say that," Wander said. Someone came to the stairs to look at the exhibits again, and Sylvia pulled everyone upstairs. Luckily, the guy didn't see them.

The group went to Dipper and Mabel's bedroom, and they decided to learn more about each other.

"This little town looks nice," Wander said. The twins immediately got up and said, "NO!"

Wander looked confused. "What do you mean, 'no?'" he asked. Oops, they thought. They had no idea how to explain it. They just had to tell them everything. And that's just what they did. They explained about the journal, the adventures they went through.

Sylvia took the book and read it. She looked unimpressed. "Oh come on! We see weirder stuff than this every day on our travels," she said. "Wait, you guys travel your world?" Mabel asked. "No," Wander said. "We travel the UNIVERSE!"

Dipper and Mabel were amazed. "T-t-t-the u-u-u-u..." Dipper tried to say.

"Yessum, we go to lots of planets on our travels," Wander said. "But we never met to come to this planet."

"Then why are you here?" Mabel asked.

"It's because Lord Hater zapped us and the blast launched us to this place," Sylvia said.

"Lord who?" the twins said at once.

"Ay ay ay," Sylvia said. "Lord Hater is the baddest guy around! He conquers planets, and has little men with eye-heads for henchmen. If you stand up to him, he'll either lock you up for eternity, or something worse..."

"I'm glad he didn't come here yet," Mabel said, "but don't worry; we'll get you traveling again. In the meantime, why don't you guys stay here?"

"Really?" Wander, Sylvia, and Dipper said at once. "Excuse us for a sec," Dipper said as he pulled Mabel into the hall.

"Mabel, we can't invite strangers to stay with us," Dipper told Mabel. "Especially if they aren't FROM THIS PLANET!" He pointed to the ground as he said that.

"Come on, Dip, they have nowhere to sleep. Plus, someone COULD find them if they sleep outside!"

Dipper sighed. "Fine," he agreed. "But once we find a plan to get them off Earth, they LEAVE RIGHT AWAY."

"HOORAY!" Mabel said as he hugged Dipper. They went inside the room. "Well, it's official! You guys can stay here," Mabel said. "Thank you," Sylvia said. "It won't be long." Suddenly, Sylvia's stomach growled. "What was that?" Mabel asked. "My stomach," Sylvia answered. "The last planet we visited was made out of candy and it made us hungry."

Her stomach growled again, but this time, along with Wander's. "What do you guys eat?"

"I guess anything you got," Sylvia said.

()()()()()()()()()()()()()()()()

After the four ate lunch, Wander wanted to go out and see what Gravity Falls looked like. Of course the others rejected the idea, not wanting to risk them being caught. Of course, while they weren't looking, Wander snuck out. Too bad Sylvia got to him before he even reached the back door.

"Sylvia," Wander complained. "This is a big planet. Let's explore it a bit."

"No, Wander," Sylvia said. "do you wanna be caught and be taken away to be experimented on?"

"No, but..." Wander started. Dipper and Mabel heard the whole converstation. "Maybe we can help," Dipper said. "I remember reading about something that can make you turn invisible in the journal. Maybe it can help you guys."

Wander, of course, took the book and flipped the pages until he found it. "Wander, it's not at the beginning," Dipper said as he took the book and flipped to the page.

"Here it is," Dipper said. Then he read it aloud:

In my investigations, I have discovered a very special part of the forest in Gravity Falls. It holds special necklaces, anklets, bracelets, and other things that hold mystical power. But the two I'm most surprised about are the two twin invisibility rings.

They allow the wearer to become completely invisible as long as the ring is on. The directions to get there are below. But beware; the journey is VERY dangerous. So if you do succeed on getting the magical gems, press the button on the column found there. It will take you right to the entry to the forest.

"Well, let's go," Wander said. "Whoa, whoa, whoa," Dipper said. "You heard the book; the journey is dangerous."

"SO?" Sylvia said, raising her fists. "I can punch the creatures that come to us into outer space!"

"Unless it's a zombie, and it bites you," Dipper said. "Then you will become a zombie and the real you will be gone forever. We need to be careful."

The twins went to their room, grabbed some gear (like a grappling hook, shovel, bat, etc.) and went off to the woods.

()()()()()()()()()()()()()()()()

Meanwhile, in the middle of the forest, an escapee from a high security prison, was running through the forest. That escapee was Li'l Gideon.

He used to be a child psychic. But he was faking it. He hates Dipper and Mabel Pines and claims to have revenge on them. "Now that I escaped," he said. "I can get my revenge on the Pines twins!"

He looked up and saw a spaceship flying by. "What in tarnation-?" Gideon wondered. It landed right in front of him. Suddenly the door opened, and tons of creatures with eyes for heads came out. The one wearing the best hat came out and said, "This planet is now under control of LORD HATER!"

A skeleton alien with yellow gloves, a black and red hoodie, and green eyes came out as well. "HEY WHO ARE YOU?!" Gideon forcefully asked. "I am Lord Hater, the greatest in all of the galaxy!" the alien screamed. "And I am here to conquer this planet!"

"NO WAY," Gideon screamed. "If this town will be taken over, it will be done by ME!"

Hater's reply was zapping Gideon with his lightning powers.

'BZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ T!'

Gideon got up (slightly burnt, though) and came up with an idea.

He's strong, Gideon thought. I wonder...

"You," he told the alien. "I have an idea that will benefit both of us greatly!"

"I'm listening..." Hater said.

"Do you have any enemies on this planet?" Gideon asked. "YES I DO," Hater said right away. "Their names are Wander and Sylvia, and I want them ELIMINATED!"

"Well, I have a plan," Gideon continued saying. "We team up, destroy all our enemies, and take over this pitiful planet!"

Hater thought for a moment before answering. Then his eyes lit up. "I LIKE IT!"

"TOGETHER," Gideon screamed. "WE'LL BE UNSTOPPABLE! THE WORLD WILL BOW TO OUR KNEES!" And they both laughed diabolically.

Did you guys like this chapter? I decided to add the bad guys of each show as well. In the next chapter, both sides will be going on an adventure. I'll see you in the next part! This is CrossoverGuy21 signing out.