A New World:

After being sucked in by the strange portal, the twins were sent spiraling down a dark, dark hole. The twins managed to brace themselves, preparing go a landing. However, even after a full minute, there had still been no sign of ground.

The fall felt like it was taking forever, surrounded by pure darkness, reminding the twins of their adventure down the bottomless pit.

"Hey, Dipper, where do you think this whole, portal thing leads to? And what "friend" was he talking about?" Mabel asked, a mix of worry and confusion painting her face.

"I don't know, Mabel. Trust me,I wish I did. Right now, I'm more concerned about where this portal is taking us. And I still have no idea what this mark is, there's nothing like it in the journal." Dipper looked to the symbol on his hand, becoming more anxious by the second.

After some time had passed, a light began to glow beneath the twins, signifying they were close to their location. Dipper And Mabel braced themselves, screaming as they fell into the mysterious light.

"Remind me again what we're doing out here, Chrom?" Said a voice, in a whiny tone. The owner of this voice was a young princess named Lissa. She was the younger sister to Chrom, the prince of Ylisse, as well as their biggest sibling, Emeryn. Protected by their knight, Frederick, the Chrom and his sister were traveling the outskirts of Ylisse after hearing word of bandits being nearby.

"We're here to see if the rumors of bandits are true, Lissa. It's our duty as Shepherds to make sure that no danger comes to pass. Besides, there's no harm in a little physical activity." Chrom joked, smirking as he watched his sister poke her tongue at him. Chrom was known as a descendant of the Hero King, Marth, the brand of the exalt upon his shoulder, as well as being the owner of the legendary blade, Falchion, the blade used to slay the evil dragon, Grima.

"M'lord is right, m'lady. We cannot afford to simply ignore any possible danger. It's our job to keep Ylisse safe." The tall, and stoic spoke, his hands behind his back as he looked looked around for any sign of danger.

"All right, I get it." Lisa spoke, placing her hands in the air, mocking the action of surrender.

The three continued to traverse the grassy field, until something was caught out of the corner of Lissa's eyes.

"Hey, Chrom, look! I think those are people over there!" She exclaimed, pointing towards the direction of the silhouettes .

The three walked over to their direction, stopping at the tree where the strangers lied.

The strangers were revealed to be a pair of brown haired twins, looking no older than twelve. They were both clad in Black and purple coats, lying unconscious under a tree.

"Children? What would a pair of children be doing all the way out here without an adult?" Chrom asked, putting his hand to his chin.

Lissa shrugged in response, "Beats me. But Chrom, we have to do SOMETHING. We can't just leave them out here."

"What do you propose we do?" Chrom asked.

"I dunno!" His sister replied.

The group noticed the boy groan, slowly opening his eyelids as he regained consciousness.

"Hey there." Lissa said, slightly crouching down to the boy.

"There are better places to take a nap than on the ground, you know. Give me your hand." The prince extended his hands towards the child, helping him up to his feet.

"Ah, man, my head hurts. And uh, thanks." Dipper responded, rubbing his head as he slowly took a look at his surroundings. His gaze eventually fell upon his sister, kneeling down to try and wake her.

"Hey, Mabel, you okay?" Dipper asked, concerned.

His sister groaned in response, eventually regaining consciousness as she sat up. "Dipper? Geez, did I have smile dip? My head's killing me." The young girl's eyes shot open, focused on the three strangers behind her brother. "Um, Dipper? Do you know those guys?" Mabel asked, pointing at the trio.

Dipper turned around to face the strangers, getting a better look at them. "Oh, um, Hello. My name's Dipper, and this is my sister, Mabel. Not to be rude or anything, but who're you?" The boy asked, slightly anxious and confused.

"My name is Chrom. And these people here are my companions, Lissa and Frederick. Are you two alright?" Chrom questioned.

The twins nodded in response. They looked around at the scenery, finding themselves utterly confused. This place looked nothing like Gravity Falls, more that of a medieval land.

"Um, I'm sorry, but, where are we, exactly?" Dipper asked.

"You're in Ylisse, are you two lost?" Chrom asked, crossing his arms.

The twins raised their brows, confusion growing even more prominent upon their expressions.

Frederick gave them a suspicious look, inspecting them from head to toe. "M'lord, I do not mean to interrupt, but perhaps the two might be the bandits we're looking for?"

"Frederick, don't be silly. They're children. Even if they were bandits, which I highly doubt, their crimes would be nothing more than petty." The prince replied, disapproving of his wary knight's claims.

The group suddenly jumped, hearing a large explosion coming from the direction of a town.

"Chrom, look!" Lissa exclaimed, pointing at the town which had flames and smoke emitting from it.

"Gods, that must be the work of the bandits! We have to stop them, hurry!" The trio began to run off, the twins stumbling around in slight panic.

"U-um, wh-what do we do?!" Dipper asked.

"Just stay put, we'll take care of this this." Chrom yelled, the three eventually vanishing from out of sight.

"Dipper, what do we do? We've got to help them!" Mabel yelled, snapping her twin out of his trance by shaking his shoulders.

From the shaking, a yellow book fell from the pocket of Dipper's coat. The boy picked it up, as he examined it.

"Hey, I know what these are. These are magic tomes! This one appears to be a thunder spell, let me try it out and see if it works."

Mabel took a step back, giving her twin room to practice.

Dipper began chanting a spell, electricity crackling from the book. He yelled "Thunder!" As a ball of electricity shot from his hand, blowing up a large boulder in the distance.

The twins looked on, wide-eyed at the magic Dipper managed to create.

"Woah! That was so cool, Bro bro! But what do I use?" Mabel asked, her hand coming to her chin as she examined the area. Her eyes spotted a bronze sword lying around, picking it up as she took a few practice swings.

"Welp, looks like we're ready to go! Come on, Dip! We've got a town to save!" Mabel yelled, her twin nodding in response as they took off towards the direction of the trio.