Dimension W2+UM

"So, how do these things normally go?" Kris asked. She and Elio were riding Lunala, with Skye and Soliera on Necrozma. Back at the base, Lillie was monitoring the situation and marshalling everyone to prepare for interdimensional refugees. Atlas was using Hoopa's Hyperspace Hole to travel to this dimension, so they were planning to rendezvous on arrival.

"Something's destroying the world, we can't stop it, we open portals and get as many people and Pokémon back to our world as we can, then we bail before shit hits the fan," Skye summarised.

"That's the plan?" Kris questioned in disbelief.

"We don't know what we're going up against, just that Absol picked up signs of danger coming from this dimension. We'll make a more concrete plan when we're through the Warp Hole and know what we're up against," Elio assured her.

"Well, good," Kris nodded, and then everything went white.

X

The Ultra Rescue Initiative Squadron A emerged into the new reality, and immediately felt a chill in the air. Looking down, the reason was obvious.

The entire world beneath them was blanketed in ice.

Elio pulled out his Rotom Dex. "Rotom? Scan the topography, does this Earth mirror ours? If so, where are we?"

The floating Pokédex buzzed, hovering in mid-air and looking down at the world below. "Bzzrt! Topological scan complete! I'm not fully certain, the ice is interfering, but with a 10% margin of error I can say that this is the Unova region!"

Necrozma drifted closer. "Did you just say we're in this dimension's Unova?" Skye called.

"That's right! Bzzzt!"

"Then I have a theory. There's a Dragon and Ice Type Legendary native to Unova called Kyurem. He must be the source of all this-sa-a-achoo!" Skye was interrupted by a sudden sneeze. "Why does it have to be ice?" she complained.

"Do you not like the cold?" Kris sympathetically asked.

"It's not just that I don't like it. Dragon-Types are weak to Ice! This entire mission is gonna be a nightmare!" Skye yelled.

"Don't worry, we'll take point on this one. Ice types are weak to Water, and I've got that in Suicune," Kris assured her. Her commander somehow didn't seem assured.

Elio patted Primarina's Pokéball. ". . So do I. If it's an Ice and Dragon Type, you can't ask for better than a Water and Fairy Type," he huffed.

Soliera interjected for the first time; "Except maybe a Fairy and Rock or Fairy and Fighting," She returned Skye's withering glare. "What? The type chart isn't hard to memorise,"

"There aren't any Pokémon with that Type combination . ." Skye paused. "Right?" she asked Rotom.

The possessed Pokédex looked unimpressed. "Actually, there's Carbink and Diancie,"

Skye just sulked. "Yeah, because a Carbink would be so helpful. And we don't have a Diancie with us, do we?"

"No, we do not," The sarcasm went over Rotom's head. "Also, before we get any more sidetracked, I'm picking up a large structure. It appears to be some kind of castle!" Rotom corrected the flow of conversation.

Skye groaned. "Let me guess. Is it made of ice?"

"No, it appears to be stone," Rotom waited just long enough for the leader to breathe a sigh of relief, before adding, "Mostly covered in ice,"

The barb wasn't worth responding to. "Alright, Kris, Elio, Soliera, hit the ground. It looks like just about everyone on the planet is on ice, but if there's survivors, round them up. I'm gonna investigate this castle,"

"Were you not listening when I told you Primarina is the best option?" Elio retorted.

"Dragon Type will cancel out Kyurem's Water weakness. Also, the type chart isn't everything. If we're going up against a Legendary Dragon, I think we'll have a better chance if we're also using a Legendary Dragon," Skye pointed out.

"Your entire team is weak to ice," Soliera pointed out. "Flygon and Flapple in particular,"

"That only matters if we get hit," Skye perfunctorily responded as Necrozma landed. She unceremoniously pushed Soliera to the ground, and Necrozma took off again. "Besides, you can't come. Lunala's the only one able to open an Ultra Wormhole, she needs to help with evacuation. Okay going to the castle now bye!"

Elio groaned. "You just want to catch Kyurem, don't you?"

"It's a dragon that isn't weak to ice of course I want to catch it!"

Soliera just grumbled as Skye vanished into the snowstorm with that parting remark. "I get I'm the weakest, but she still could have been more polite,"

Elio looked around. "Hold on. Where's Atlas?"

X

The cause of the Ice Age encrusting this dimension's Unova was immediately obvious as Skye approached what she had no way of knowing was Dragonspiral Tower.

A massive draconic shape was on the very top of the tower, roaring and launching ice in every direction. It seemed to be demanding whether there was no one in the world who could challenge it.

As soon as it was clear, Necrozma roared back, and across the hailstorm, the two Dragons' eyes met.

"Whoa, buddy," Skye soothed her partner. "Let's not be hasty. Something about that Dragon looks different," She squinted. The white snow made it hard to pick out details, but Kyurem seemed taller than it had in the pictures she'd seen.

"And who might you be?" Skye stilled, hearing a voice calling down from the castle. Necrozma didn't need to be told, swooping down to find an aged man standing on the edge of the castle's battlements.

Skye frowned. This man, balding with pale hair, dressed in black robes, wielding a cane, was unnerving. "Name's Skye. I'm in charge of the Ultra Rescue Initiative. Who are you?"

The man casually walked backwards, unbothered by the snow and ice surrounding him. "Once, those I deemed worthy of it referred to me as Ghetsis. But now, they only call me king,"

The name rang a bell. "Ghetsis?" Skye's eyes narrowed. "Hey, you were part of that Rainbow Rocket fiasco, weren't you?"

The light of confusion in his eyes seemed genuine. "Ah . . I'm afraid I have no idea what you are talking about, young lady,"

Skye sighed, dismounting and planting her feet on the battlements. "Right, must be an alternate dimension counterpart then. Look, here's the rub. Me and Necrozma here, we're in charge of a group called the Ultra Rescue Initiative. We travel to worlds that are on the brink of destruction and save as many people as we can before it all goes to Distortion. Sometimes literally. I'm already fairly certain, but you are the one responsible for the planet being on ice, right?"

"I am indeed," Ghetsis chuckled morbidly. "Once, I dreamed of changing society, to make owning a Pokémon shameful and thus pave the way for my dominance. But now, I am the only one who commands the power of Pokémon, because mine will soon be the only one left! Across the globe, millions of Pokémon have already frozen to death, and it shan't be long until all the rest join them. And then with White Kyurem at -"

Skye was unimpressed. "Whatever!" she interrupted. "Jeez. Are you listening to yourself? You're monologuing!"

Ghetsis seemed displeased at being interrupted. "Well, it hardly matters. Soon your Pokémon, too, will succumb to the cold, and then you'll have no choice but to bend the knee to the king!"

"There is just no version of this conversation that doesn't end with me saying 'Necrozma, use Photon Geyser', is there?" Skye sighed. Necrozma, though, took this as a command, and immediately launched a beam of Psychic energy up at Kyurem.

Skye blinked, raising a finger. "Wait. What's a 'White' Kyurem, and how is it different from a regular Kyurem?"

Her answer came when Kyurem returned the shot with an Ice Burn, a powerful attack that knocked Necrozma backwards.

"White Kyurem is the fusion of Kyurem with Reshiram! It is the undeniable truth that I am king of this world!" Ghetsis roared.

Looking up, now that she was closer Skye could see that he was right. This Kyurem shared quite a lot of traits with Reshiram; white feathers on parts of its body, a large white drill mounted on its tail, mismatched horns, one of ice and one of wispy white feathers . . the frenzied expression on its face, though, was all Kyurem.

". . Oh," she mumbled.

Necrozma screeched, in pain rather than fury for once, and that snapped Skye out of her reverie. "I don't know if it's still Ice-Type, but assume that it is and try not to get hit!" she commanded. "I'll get you some backup!"

"Backup? You mean you aren't following the tradition of only one Pokémon at a time? Shameful!" the leader of Team Plasma snorted.

"I think the rulebook's frozen solid," Skye acerbically replied. "Besides, I bet the readers will want to see this,"

While it was normally the case that a Pokémon could only be Dynamaxed at a Power Spot in the Galar Region, at Skye's request the labs of Aether Paradise had begun experimenting with Galar Particles and the harvesting and containment thereof. It had been surprisingly easy to build what they called a Dynamax Battery. It was this innovation that allowed Skye to pluck a Pokéball off her waist and tap a new attachment to her spacesuit. "We've travelled across the multiverse, and we've seen a lot of things! But the one thing that I've never seen is something that can stand up to an angry Dragon! So Gigantamax, Flapple, and show him your rage!" The Dynamax Battery discharged into the Pokéball, making it swell and glow into a massive white shape. Unfortunately, the device could only be used once before needing to be recharged, but that was plenty.

Ghetsis watched in confusion as Skye lifted the huge Pokéball in both hands, before tossing it over the side of the castle's terrace. "Did you just throw away your Pokémon?"

Purple lightning crackled upwards and the sky split open, a stormy purple vortex washing away the clouds of snow. Necrozma roared triumphantly as the worst of the snowstorm evaporated, but a massive shape beneath swelled and crackled with power, growing larger and larger, supercharged by Galar Particles.

Ghetsis looked at the result in confusion. "Is that a giant apple?"

Before Skye could respond, a huge green head burst out of the apple and roared, sending a wave of sweet, sticky syrup washing over the castle. The man regarded his tarnished robes in disbelief. "What in Distortion is going on?"

"Galar has weird dragons," Skye off-handedly replied. "Flapple! Use G-Max Tartness, get Kyurem off balance! Necrozma, when you see an opening, use Prismatic Laser!"

"Kyurem, move!" Ghetsis instructed, but the dragon ignored him . . and that was its undoing. Massive apples rained down from the sky, having been lobbed upwards by Flapple. Unfortunately, Kyurem had taken the opportunity to throw a Blizzard at the massive Pokémon.

Skye paled, realising the mistake in her strategy. The time it would take for G-Max Tartness to hit was plenty of time for Kyurem to retaliate. With a quadruple weakness to ice, she'd been hoping that Flapple and Necrozma could overwhelm Kyurem quickly enough that he wouldn't even get off an attack.

And then a shining golden dragon interposed himself between the other Legendary and its target. Necrozma took the brunt of the Blizzard, groaning in pain but toughing it out - and then G-Max Tartness landed, apples raining down around Kyurem and battering it from every direction as they exploded with sweet, sticky syrup.

A perfectly aimed Prismatic Laser lanced in between disintegrating apples and knocked Kyurem sideways, sending it flying into the air. Necrozma shrieked in victory, looking dazed and his light dimming.

Kyurem's wings spread and it caught itself, flapping furiously. Its left wing, horn and tail lit up red, energy bursting outwards from its tail to keep it airborne. Skye grinned. White Kyurem might have Reshiram's wings, but it wasn't built to fly. Ghetsis drew breath, but Skye was faster. "Max Wyrmwind!" she instructed Flapple, who roared, and an upwards tornado infused with draconic energy shot upwards from the ground, battering at the Legendary.

Ghetsis spluttered. "This shouldn't be possible! Kyurem! Sheer Cold!" Seemingly just to be contrary, Kyurem used Ice Burn. This time, though, no one was able to intercept the blow and it hit Flapple head-on.

The Apple Pokémon shrieked, tottering and falling backwards, and Skye realised his time was up. With a flash of light, the massive Pokémon was returned, and Ghetsis looked smug. "Nothing can beat the power of White Kyurem,"

"Just because you've got Type advantage doesn't mean you have the advantage," Skye growled in response. "Necrozma, Dragon Pulse!"

"Outrage!" the self-proclaimed king replied. Kyurem ignored him and blazed forwards, avoiding the Dragon Pulse.

With Flapple gone, the Dynamax Storm was abating, and the snow was intensifying once more. Skye grimaced, knowing her team was on a time limit. Should she release another Pokémon? The issue was, none of them were strong enough to stand up to Kyurem . .

"Necrozma, time for a Z-Move!" Skye instructed, and her partner looked at her sharply. "No, not that one. The generic one," With a flourish, Skye's Dragonium-Z was set into her Z-Power Ring, and she raised it, posing. "Use Devastating Drake!"

Ghetsis frowned. "How many gimmicks do you have?"

"Not enough," Necrozma launched a roaring, winged projectile, that bathed Kyurem in light before striking him and shattering with a massive explosion. Skye groaned, feeling the backlash of the Z-Move, but it was worth it if it got her the win . . "How in Distortion is that thing still standing?" she groaned gesturing at White Kyurem, who looked singed but alive.

"Because no matter how many tricks you have up your sleeve, the truth is unassailable, and that truth is that I and Kyurem are superior!" Ghetsis roared.

"One more word out of you and I will throw you off this tower," Skye lowly threatened. "Keep going, Necrozma! He can't take much more of this!"

And suddenly Kyurem was physically assaulting her Pokémon in the throes of Outrage, striking from every direction and beating Necrozma downwards.

Laser-like crystals shot out of Necrozma's body, beating at Kyurem in response, each breaking after one hit but more constantly being generated. "Is that Power Gem? You didn't tell me you could learn Power Gem!" Skye complained. "Use Power Gem!"

Necrozma tried again, glowing crystals matching Kyurem's ice. Energy pulsed outwards, matched at every turn by a storm front of ice so cold that it burnt. Both seemed to be on their last legs.

But Necrozma had an edge, in the form of Neuroforce. His signature, exclusive ability meant each Power Gem hurt just a little bit more, and in the end, one perfectly executed Power Gem scored against Kyurem's frozen right wing.

Kyurem shrieked and spiralled, crashing into the side of the castle and landing in a sprawled mess nearby. There was a burst of light, and suddenly the Pokémon unfused, leaving a Reshiram pinned underneath an unconscious, but thankfully ordinary, Kyurem.

Skye smiled triumphantly as a battered Necrozma landed behind her. "Now, you were saying?"

"How dare you?!" Ghetsis suddenly roared. "You assault me? ME? The perfect king! I am the one who conquered Kyurem and Reshiram, I am perfection! It is an undeniable truth that I am meant to rule this world!"

Skye's eye twitched. "You want to talk truth?" she demanded. "I don't know about your 'undeniable truth', and I don't care! What's true is that a lot of Pokémon are dead down there because of your actions! What's true is that you're nothing but an egomaniac who'd rather see the world destroyed than as a place that you don't own! And what's true is that we just handed you your ass on a plate, and you are done! Watch," With that final proclamation, Skye sent an Ultra Ball spinning at Kyurem.

It bounced off harmlessly, and Ghetsis chuckled. "This cane is an invention given to me by my subordinate. It prevents Kyurem from being captured by any Pokéball!"

As soon as he finished talking, the cane was plucked from his hands and snapped over Skye's knee, where it sparked and died. "Thanks! That was really helpful," Her cheekiness was deliberate, and the man fumed.

With a flash of light, the Legendary Pokémon was sucked into the second Ultra Ball, which fell to the ground. Unfortunately, the capture failed and Kyurem was released, still unconscious. Skye sighed and threw another. "I brought like fifty Ultra Balls, I can do this all day," she assured Ghetsis.

"You think I'll just allow you?" the man snapped, making to lunge at her - but a growl from above forestalled him.

"Yeah, remember your whole 'no one can stop me because only I have the power of Pokémon' thing? Doesn't feel so good when you're on the receiving end, does it?" Skye smirked. It took a few more balls, but eventually Kyurem's capture registered, and she pocketed the Pokéball. "There's gotta be someone in this dimension who can take care of this," With Kyurem out of the way, Reshiram finally stood, looking at Skye with a grateful expression.

Ghetsis was still glaring bloody murder at her. Skye just snorted. "Don't worry, I'll make sure the police of this dimension find you. Heh. Hey, this dimension actually might survive! That'd be a first,"

She opened two more Pokéballs, and returned Necrozma. "Get some rest, buddy, we've got a long flight home. Kommo-o, keep an eye on this guy. Altaria, let's go see how the others are doing," Kommo-o roared in agreement, hunkering down and fixing Ghetsis with a lethal stare, and Altaria, with Skye riding her, took off.

Reshiram watched her go, looking thoughtful.

A/N

A/N

This dimension isn't over, there's going to be a follow-up.

Also, I couldn't find a good place to mention it, but N and the player character in this dimension were frozen alive by Kyurem and used as trophies inside Ghetsis' throne room. And, ironically, died of thirst inside unmeltable ice.