A/N: Here's the much-awaited fifth installment of Harry Potter and the War Within!

I've been pretty impressed by the Plains of Eidolon update. It has introduced some... interesting plot points, but with a little effort I should be able to work everything in. It could help clear some things up that I hadn't fully thought about yet, so that's a plus.

Also, just throwing this out there: Song and Dance related chapter titles are purely coincidental. I have no idea if I want to keep it up or not.

WARNING: Spoilers for Harry Potter and Warframe are included. Also, this story is being changed to M because of major character death and violence.

DISCLAIMER:

Harry: So, Lotus, what are we doing today?

Lotus: Your job is to distract the enemy while a fellow Tenno operative raids the ship for the rights to Warframe and Harry Potter. Make your presence known.

Harry: I always have to distract the enemy... why can't I raid the ship for the rights to Warframe and Harry Potter?

Lotus: You seem to lack the... well, the subtlety required to perform that task.

Harry: Heck.

[KEY: "Speech" 'Thoughts' "Comms"]

Harry Potter and the War Within

CHAPTER 4: Smooth Criminal

(alternately: In Which Harry Breaks Into A High Security Asteroid for Fun - He Really Needs A New Hobby)

[ASTEROID FIELD - NAGA, SEDNA: 20 MINUTES LATER]

As Harry's Archwing deployed, the Lotus spoke.

"Something is hiding in this asteroid field but before you can investigate you need to disable the security matrix. Ordis, are you certain this is the best angle of approach?"

As the Tenno adjusted to the transfer of control from Inaros to the Odonata, he listened closely for the reply.

Ordis replied with a vaguely bemused tone. "Well, outside this corridor lie burst scanners, severe radiation, proximity mines-GRINEER DEATH BEAMS-so yes, Ordis recommends staying within the shipping corridor."

Harry gulped, throat suddenly dry. 'Who let the Grineer get a hold of death beams?,' he thought to himself as he glided slowly towards the corridor. There were scanners every few feet, and it was a long tunnel. He sighed as he spotted a small cargo ship approach the entrance. Ordis came back over the comms.

"Operator, watch that transport ahead. The scanner is only able to scan one side at a time. You can use that to your advantage."

"You heard Ordis. Keep the transport between yourself and the beams. Do not let them touch you."

Harry eyed the transport dubiously before getting into position. As soon as the ship blocked the scanner, he dove underneath it. The next scanner was to the right, so Harry dove to the left of that one. Right, left, over, left, under, over, right, left, over... he barely had to think. After what could have been hours but probably was minutes, he passed the last scanner. Both he and the Lotus let out breaths of relief. Ordis' simulated voice came over the comms.

"Might I say that was smooth, Operator."

The Lotus smiled wryly, but quickly got to business. "You're through. Land at the checkpoint."

Harry flitted over to the checkpoint, and the Archwing detached, folded up, and flew off somewhere to wait. The Warframe landed lightly on the platform and readied his weapons, waiting for further instruction.

"This checkpoint is the central hub of the security matrix. Shut it down so Ordis can fly you in undetected."

Harry gave a snappy salute from the Somatics chair before grinning widely and fully transferring into his Warframe. "Let's bust this joint."

The metallic avatar loaded the Soma before cautiously making its way to the waypoint. The security hub was markedly different from most Grineer designs - instead of dull metal and olive greens, everything was black and red. 'Tacky,' thought Harry amusedly.

He heard unmistakably grineer voices, and jumped behind a pile of supply crates. Two Grineer lancers walked in, but they weren't like anything he'd seen before. Their armor shared the darkened color scheme of the base, and they wielded Kohms instead of Grakatas. 'Clem would be dissappointed,' Harry thought to himself.

He began to charge his Scarab Armor - draining about half of his health to get the passive boost to about 65%. He waited until one of the Grineer soldiers was looking away, and cast Devour. Tendrils of sand reached out to grab the Lancer, and dragged him forcefully over to Harry. The sand tore at the Lancer, draining its lifeblood and feeding it to Inaros. Once the enemy was dissolved, Harry repeated this with the other lancer, getting his Scarab Armor to 100% and his health at about three quarters.

'Good, no extra surprises.'

[INSERT DEFENSE MISSION FIGHT SEQUENCE] [Like, look it up on YouTube or something, I suck at writing fight scenes. I tried like eight times and none of them worked at all.]

"Ordis no longer detects any security."

Harry grinned in response, even as the Lotus replied. "Good, but we can't take any chances, silence the remaining Grineer."

"Right up my alley," he muttered as he swapped to his Jat Kittag.

About thirty crushed Grineer heads later, the Lotus spoke. "You are in the clear. Keep moving."

He nodded and headed towards the waypoint carefully. When he finally got to an open platform, he stopped and stared in awe.

"Are you seeing this?!" Harry exclaimed in disbelief.

The Lotus' reply seemed to be breaking up, but still understandable. "It must be the Queens' Fortress."

" Did they... Are those Fomorian engines mounted on an asteroid? No wonder we've never been able to find it. It's always moving."

" Excellent, Tenno. Now get out of there. We'll need to analyze the intel you've gathered before our next move."

Harry paused. "But... we have to act quickly, while we know where it is!"

"There is a lot of Transference distortion in this area. I recommend we abort this mission and wait for Teshin to reach out."

Harry snorted. "Yeah, like that's likely to happen. Even if he deigns to contact a child about this, the Fortress will be long gone by the time he does. I'm going in."

He jumped out into space, his Odonata snapping to his back quickly. He cracked his knuckles with a grin and shot off towards the Kuva Fortress.

[THE KITCHEN, NUMBER 12 GRIMMAULD PLACE: 10 AM ~3 DAYS PAST DEPARTURE]

Nymphadora Tonks stared blankly at the empty Firewhiskey bottle in her hand. It was far too early to be drunk, but she didn't care. She'd already quit her job as an Auror - her guilt over Harry's and Sirius' deaths overtook any sense of obligation she felt to her (now previous) profession.

Whenever anyone tried to get her out of her rut, it always came back to one thing: Tonks had been fighting Bellatrix, and had almost stunned the woman, before she made a dumb mistake. If only she had been a little better, a little faster, a little smarter.

"Dear Merlin, Nymphadora, you've really let yourself go."

She glared at Neville, who'd just walked into the kitchen. "Don't call me that," she slurred.

The once-reserved boy looked her over skeptically, before eyeing the empty Firewhiskey bottles strewn across the table. "As if you're in any shape to stop me," he remarked as he started cleaning up.

"Yeah," muttered the Ex-Auror moodily. "Damned useless anyway. Couldn't even keep Ol' LeStrange distracted for half a minute."

"Really though, Harry wouldn't want you doing this to yourself."

She snorted. "Yeah, well, I don't think we'll ever find out what Harry wants, thanks to me."

Neville raised an eyebrow. "Did you push him into the Veil?"

"What! No!"

"Did you push his godfather into the Veil?"

"No..." Tonks glared at the table - she knew where this was going.

"Then how was it your fault?" His voice had a dangerous edge to it, now.

"I couldn't beat Bellatrix."

"Not many people could."

"I was fighting her though! I messed up and made a dumb mistake and got blasted!"

Neville slammed his palms onto the table and leaned over the table towards Tonks.

"THEN MAKE SURE IT DOESN'T HAPPEN AGAIN! PEOPLE OUT THERE ARE DYING NOW, AND YOU'RE JUST SITTING HERE FEELING SORRY FOR YOURSELF? GET OFF YOUR LAZY ARSE AND TRAIN!"

"Sir, yes sir!" Tonks found herself snapping off a salute before she even knew what was happening. This boy was no longer the shy, Hufflepuffish boy he had been before. Going through the Battle at the Ministry and getting shoved into the 'leader' position (recently vacated by the Boy-Who-Lived himself) really did suit the kid.

A/N: Sorry about the short chapter, I suck at writing fight scenes so I kinda gave up on that. Things are about to get real saucy in the Kuva Fortress, and good old Nevvy-boi is finding his backbone.

And now for some review responses!

Knight5946 - Whether or not Harry will be using Warframes at Hogwarts will be iffy. This is more of a story about how being a Tenno changes Harry and his journey through The War Within than it is throwing Warframes at wizards. That being said, it is a possibility - It wasn't originally in the plan but I haven't fully worked Plains of Eidolon into the plot. I have some ideas for it that will clean up some plot holes rather nicely.

Oberon the fox - Thanks! I was inspired by the multitude of fanfics that use the Veil as a way to throw Harry into different universes, in combination of the dramatic unveiling of the Operator's infinitely relateable but somehow still specific backstory in The War Within. Your fanfic has some merit - I just found using the Veil to cross universes was easier that trying to work The Tenno into the timeline and how/why everyone else did or didn't know about them.

shugokage - Thanks! I'll probably need lots of luck to finish this properly.