"Valdez, are we lost?"

Frank was standing on the Argo's deck as he called over to Leo, who was steering. According to a map of the Mediterranean, they should have passed the Cape of Good Hope hours ago. Nor should the water be so dark.

"Of course not, dude! Festus has just…taken a little break, that's all."

"From what?"

"Navigating…?"

As Frank groaned, Percy ran up the stairs that led up from the cabins. He stopped at the top of the stairwell, out of breath, looking at them both.

"Guys, I don't…I don't know where we are."

"So?" Leo said. "Festus is guiding us. We'll be fine."

"I thought you said…"

"Shut it, Zhang!"

"No, you don't get it!" Percy insisted. "I always, always know our nautical bearings. But here…it's like I'm blind. Like when I tried to Iris message Annabeth before my memories came back."

They stared at him, Leo puzzled, Frank trying not to openly panic.

Just when the boys thought it couldn't get weirder, a thick fog wafted ominously onto the Argo, curling around their toes and coating the ship's flooring.

Jason appeared on the steps behind Percy.

"I saw the mist!" he said. "What's going on?"

"I wish we knew." Percy confessed. "Do you think this is capital M Mist?"

Leo hoped not. The last time he ran into the stuff he was cruelly tricked into thinking someone he didn't know was his best friend.

"I'm going to check on Piper!" Jason announced, taking the stairs back down two at a time.

"I'll go get Annabeth." Percy decided. "She'll know what's going on."

When he had left, Frank shifted nervously.

"I hope Hazel's okay. The sea is getting kinda rough."

As he finished saying this, he rocked forward and waved his arms wildly for balance.

"Yeah, that's o-"

Leo was cut off by a cannon-like blast and the main sail bursting into flames.

Frank stared in terror as a flaming beam fell directly above him.

Leo tackled him out of the way. At the same time another explosion ripped the burning sail off to rocket toward the ocean.

"Thanks, Valdez."

"Sure, Zhang."

It was getting hard for them to see. The mist was covering the ground for a few feet up now.

Frank and Leo dimly made out Percy and Jason returning with Annabeth and Piper. The boys had their swords, the girls their daggers.

Frank thought he saw Hazel in the back of the group and Percy gesturing to the fire, her coat, whispering something in her ear, and gently nudging her to the safety of the cabins.

It was now impossible to see anything and the sea was more turbulent than before. Riptide and Jason's coin-sword were jostled out of their hands by the Argo's seizure fits.

"Where is the fire coming from!?" Annabeth shouted over another cannonade.

"I don't know!" Percy bellowed.

"Where's Coach!?" Leo screamed.

"Asleep!" Jason answered.

Suddenly, the Argo was spinning as though caught in a whirlpool.

"Hang on!" Percy yelled, grabbing Annabeth's hand and pulling her down.

Everyone screamed and hung on for dear life.

"So, like…can I have dibbs on whatever's on this one, or…?"

"Tuffnut! That's awful! They may still be alive!"

"Astrid's right. We should look for survivors."

"Of course you'd side with her, Hiccup!"

"Well, she's right!"

"Yeah, and besides, you called dibs the last like, five times, already!"

"Snotlout, that wasn't my…oh, shh! Shh! I think he's waking up."

Percy groaned through a horrible headache.

As his vision cleared, a scrawny brown haired and freckled boy about his age in a fur vest and boots beamed in his face.

"Hey, there! How are you feeling?"

"Ugh…what happened…?"

"You were shipwrecked. You…"

"Mmmm…hm?"

Annabeth was regaining consciousness…to see a long haired blond boy examining her beaded camp necklace.

On instinct, she shoved him away and flipped him on his back, restraining him.

A little removed from them, another blonde girl smiled. She had braided hair and sported a skirt and belt with a skull motif that Nico would envy.

"I like this one. She hits Tuffnut."

"Man, blondes are supposed to be dumb like me!" Tuffnut grumbled.

"Tell me about it…" Leo slurred, slowly waking up. "Wait, who are you guys?"

The brown haired boy grinned.

"Good, it looks like you all survived. I'm Hiccup. The one your friend caught stealing is Tuffnut."

He glared disapprovingly at the other boy, who Annabeth was releasing.

"What? I like necklaces!"

Hiccup sighed.

"His twin sister over there's Ruffnut."

A girl who looked like a female version of her brother was helping Jason get Piper to her feet.

"Our violent blonde here is Astrid."

"I'm not that violent!"

"You punched seven things this morning."

Astrid threw her hands up and rolled her eyes but smiled at Annabeth warmly. She smiled back.

Astrid also grinned at Leo who was staring at her. He gulped and blushed.

"Astrid? Why do I recognize that name…?" Piper muttered,

"And the big guys resuscitating your big guy are Snotlout and Fishlegs." Hiccup continued.

A bulky black haired boy and an obese boy wearing the same vests and boots as Hiccup and the twins were pulling Frank up.

"Is anyone else on board your ship?" Hiccup asked.

"Hazel!" Frank cried.

He stumbled downstairs and emerged a few minutes later cradling her.

Her head was gashed wide open.

Astrid put her hands to her mouth.

"Oh gods, is she…?"

Frank shook his head.

"She's okay, just knocked out. Hedge is…still asleep."

"Okay, that's good." Hiccup said. "But she's gonna need medical attention. Uh, alright, guys, let's take 'em to my house."

Hiccup and his friends led them through what Percy thought looked like a historical reenactment park. The buildings were thatched, everyone wore old-timey clothing, there were sheep and cattle...

"Annabeth, what kind of place is this?" He whispered as they walked side by side.

"Offhand…? I'd say a tenth century Viking village."

"What."

"Give or take a century."

"Did you hit your head in that shipwreck?"

Annabeth smirked playfully.

"Give me some credit, Seaweed Brain. My head is fine."

Come to think of it, Percy noticed something he hadn't before.

All the kids they had just met except Hiccup and Astrid were wearing…Viking helmets.

"What the…?"

Just then, Jason leaned in to whisper with them.

"That Astrid girl said 'oh gods' when she though Hazel was dead. Do you think…?"

"...they're demigods?" Annabeth finished. "I don't know."

They arrived at a large, cozy looking cottage with smoke in the chimney.

"This is my house." Hiccup told them. "It's just me and my dad. Let's patch up this girl and we can talk."

Percy was shocked when he saw who the skinny teen's father was.

A hulking man with a long red beard braided in several places stoked a fire in the middle of the house.

"Dad!"

The huge man dropped his poker and rushed to his son.

"Thor Almighty! What happened to the poor lass?"

He scooped Hazel up from Frank. She fit easily in his hands.

"They were shipwrecked, Dad. She got hurt when they crashed."

"I'll see to it, don't you worry. Be back in a tic."

Hiccup sighed in relief and smiled at Percy as his father dashed upstairs.

"I'm sorry. This must be crazy for you guys."

"Where are we?" Percy asked.

"Berk. We're a village that…"

The cottage door burst opened and a black dragon, small by Peleus or Frank standards filled the doorway. It wagged its tail and perked up its ears (were those ears?) like a dog. He reminded Percy of Mrs. O'Leary.

He bounded inside and tackled Hiccup to the ground, licking him and roaring happily.

"…trains dragons. This is Toothless. Say hi, Toothless."

Toothless The Friendly Dragon grinned stupidly at them and chirped.

"That's what we think hit your ship. Wild dragons, that is. Not ours."

"Woah, seriously? That's so cool!" Percy exclaimed. "I've never seen more than one dragon in one place. You guys raise them?"

"Do you guys have a dragon, then?"

"No, but we have Frank." Percy said, gesturing to him.

Leo didn't want to mention Festus and scare them.

Snotlout stared in consideration.

"Is it because your f—"

"IT'S NOT BECAUSE I'M FAT!"

As Frank scowled, Hiccup's dad came back downstairs.

"She's restin', lads." He announced.

"Thanks, Dad." Hiccup said. He turned to the others. "While she sleeps that off, why don't you guys come with us to the mess hall? It's less crowded and it's not mealtime, so it's pretty much empty."

Percy nodded.

"That's a good idea. I want to figure out where the heck we are."

"You still couldn't tell?" Annabeth asked, alarmed.

Percy shook his head.

This seemed to confuse Hiccup and he shared a strange look with Astrid.

Still, they led the shipwrecked crew down a dirt path to a large community center set at the head of the village.

Along the way, dragons swooped overhead, more varieties than Percy had ever seen. There were large, traditional looking dragons, smaller bird-like dragons, and even miniature dragons scuttling on the ground.

Inside the building was a set up a bit different than Camp Jupiter's mess hall. Instead of small tables and cushions, there were several severe tables that could hold many people and long benches.

They sat at one, the demigods of the Argo on one side, the Apparently Viking Teenagers on the other.

The demigods formally introduced themselves. In turn, Hiccup and company explained the recent history of Berk. How they had killed dragons until Hiccup had befriended Toothless. How they were working to train the dragons instead.

"So you guys are really Vikings? Like, actually Vikings?" Leo gaped.

"Really." Hiccup confirmed. "Why?"

"There are kid Vikings?" Percy asked skeptically.

"We're not kids!" Tuffnut countered huffily.

"Yeah, I'm even getting scruff." Snotlout informed them proudly.

"You are not." Ruffnut scoffed.

"Are there no Viking clans where you're from?" Astrid wondered.

"Where are you guys from, anyway?" Hiccup asked.

"America." Percy answered. "Well, Frank's Canadian, but…"

"Never heard of those places." Hiccup commented. "But then, we haven't exactly traveled far until recently."

Annabeth shot Percy an I told you so look.

"Wait, what sea are we surrounded by right now?" Percy asked suddenly.

"The Baltic." Hiccup said.

"The Baltic?" Leo cried. "Man, I was way off course…"

"I told you…"

"Stuff it, Zhang."

Percy felt sick. What was going on? Was this the past? How? Was that Capital M Mist after all and magic was involved? Were they taken to another era or even dimension? was that possible? Or was this an illusion like Hazel's blackouts?

When they had shipwrecked, it had been midafternoon. Now the sun had fully set. Leo had since examined the Argo and had come back to report it was badly damaged.

"No problem." Hiccup said confidently. "We're also a village of master shipbuilders. We'll have you guys up and running in no time. But right now, it's almost dinner time. You guys should get ready to eat. We can see about your ship when it's light out again."

Percy stood on the top stair of the mess hall's porch in the night, illuminated by two torches attached to the building's walls.

There were no bugs buzzing. Percy figured it must be too cold for them.

Jason came through the huge double doors to join him.

"Percy, we can't stay here." He said. "Nico can't have more than two days. We have to leave. Now."

"I know. But the Argo's busted, Hazel's out of commission and I'm not going anywhere until I can read our bearings."

Jason opened his mouth to object when there was an explosion of fire over the village accompanied by piercing screeches.

"DRAGONS!" Came a shout from the town.

"Oh great, not again." Percy grumbled, uncapping Riptide.

As Jason followed his lead, everyone emerged from the mess hall.

"Are the dragons rebelling or something?" Piper asked nervously.

"No!" Hiccup shouted, the fire blasts roaring in everyone's ears. "I told you, ours aren't violent! These are wild dragons! This normally doesn't happen!"

"Well, it's happening now!" Leo snapped.

There was anarchy in the village. Dragons were dive-bombing and setting fires everywhere.

They spotted Hazel, her head bandaged, sprinting around the village and slashing with her cavalry sword.

Hedge was apparently awake too as they distinctly heard him yell at the dragons to die.

"We'll deal with it!" Hiccup insisted. "Guys, let's get to the arena, quick!"

"Wait!" Percy said. "Frank, can't you just…"

Frank was gone.

Everyone looked up at a loud roar to see a dragon far bigger than any of the attacking ones. It batted them out of the sky one by one. The ones it didn't get retreated.

The dragon landed in the village, careful not to crush anyone and in its place stood Frank, bouncing on his heels, stretching, and cracking his knuckles.

Hazel ran up and hugged him fiercely.

"Yes!" Percy cheered happily. "Way to go, big guy!"

Annabeth taped his shoulder and pointed to the Vikings.

They were all gaping at Frank.

"Did…did he just turn into a dragon and completely annihilate those other dragons?" Astrid murmured, terrified.

Hiccup looked at Percy in awe.

"I think you guys have some explaining to do yourselves."

Percy grinned sheepishly.

"I think you're right."

A/N: I can't resist a crossover, can I? Well, thank you for reading and do tell me what you think! Constructive criticism is very welcome! And I would like to know if anyone actually wants me to continue this story or not, heh.

Anyway, I hope you enjoyed it!