Disclaimer: I don't own it. Sadly.

Warnings: Foul language. Violence. Will become slash later on.

A/N: Chapter numero uno. Thank you all for the reviews/alerts/favs. Honestly, I wasn't expecting so many hits so soon. It's inspiring, really. But before I bore you too much, enjoy the chapter. Feedback is, as always, greatly appreciated.

Chapter One

They all congregated in Tony's living room - or one of them. Holographic screens surrounded them, displaying what appeared to be surveillance videos, old photographs and the other information contained in the classified dossier that Jarvis had acquired an hour prior. Another screen displayed Natasha and Clint's faces, the video being relayed from an untraceable Stark Industries phone.

"What does this mean?" Steve was the first to speak as the assembled Avengers attempted to process the information before their eyes.

"Well, either she knows a great anti-ageing program," Stark began, "Or-"

"Or," Bruce spoke up, "she's found a source of immortality."

Clint didn't look amused, "And Fury wants us to bring her back?"

"It says here she was born somewhere in Scandinavia, known as Morrigan Heldatter - no way to know if that's her birth name or an alias - wow. This is an incomplete dossier, especially coming from S.H.I.E.L.D... Says she was born in 1943..." Steve scanned the document, "That makes her over seventy years old."

Thor's rumbling voice was heard for the first time since Tony'd opened up the file, "Is that not the time when Midgardians warred amongst themselves? For the second time?"

Stark's eyes lit up and Rogers tensed, "Do you think...?"

"Hydra?" Natasha interjected, "But that wouldn't make sense. If they had succeeded in creating a serum or something to make someone immortal... wouldn't Schmidt have used it on himself?"

Captain America shrugged, "It's really hard to say. But either way, that base was destroyed. A project of that magnitude definitely would have been developed and stored there, however everything there was incinerated and crushed by the explosion. "

"Hate to contradict you, Spandex, but we're dealing with someone supposedly you know... immortal?"

The Captain was silent, and all eyes turned back towards the two agents. "How are you planing on capturing one of the ;most highly trained mercenaries in the world?" Banner inquired, glasses twirling between his fingers.

"A lot of tranq's?" Clint said slightly jokingly before his partner cut in.

"Given this new intel, we'll have to go all out to take her down. Probably. You wouldn't happen -"

Suddenly, the video cut out and the line went dead.

"JARVIS, what the hell just happened?" Tony barked, all the while manipulating the interfaces around him to suit his needs.

"It appears sir, that their signal is being blocked. I have tried to reconnect but my attempts have failed," the posh accented voice of the AI reported.

"Then we must hope that our friends have the means to complete their mission," Thor boomed.

Everyone in the room nodded in agreement beefore dispersing throughout the mansion. Thor and Rogers went to the sparring grund which Tony had had built - below the ten levels of R&D and the apartements they all inhabited - to be sound, Mjölnir, and shield-proof. The two geniuses went to work in the labs; Tony had an idea for something that would prevent the signals being blocked and Bruce wanted to research some more on the girl's supposed immortality. Without even having said a word, the team known as the Avengers had jumped into action, preparing in every way possible.

"Fuck! What could have blocked this signal like that?" Clint stared at the phone with a scowl on his face.

"We can worry about that later, Clint. We have company."

Hawkeye looked out the window of the abandoned warehouse that served as their temporary hide out. He spotted a knot of people approaching, only one of them seeming to be female - they all wore hooded jackets or sweaters, making it hard to distinguish their faces or genders. "Is that her in the center?"he inquired.

His partner peered down at the person the entourage or armed men surrounded, "Seems like it. You think you can take her down? I'll take care of the guards."

Barnot nodded as Romanoff began the descent to the bottom floor. He drew and arrow from his quiver and nocked it to the bowstring. The projectile, aimed for her back, suddenly sprouted from the chest of a black clad man who slumped down, dead. Grey green eyes stared up at the pair, expression blank. A few muttered words and hand signals later, the small force had dispersed, leaving the young woman vulnerable. The archer soon saw Natasha's fiery red hair in the alley below and rappelled down to meet her as she began speaking.

"Morrigan Heldatter," the spy began, "We're going to have to ask you to come with us. It would be in your best interest if you cooperated."

The girl smirked, the expression sending a small shiver down Clint's spine. It was eerily familiar. "I do apologize, Agent Romanoff," she spoke in a lilting accent not unlike that of Thor or Loki, the smirk never leaving her lips, "but I have no intention of co-operating. That would be terribly...dull."

"Not dull," Clint cut in, nocking another arrow to the string, "but rather quite messy. For you."

Shaking her head, the raven haired girl turned on her heel and began walking away, "No, Agent Barton. It has already become quite messy. For you. I hope you both enjoy your day. It is a pleasure meeting you."

Natasha noticed for the first time, as the woman left, ducking and weaving this way and that until she was about five meters from them, that all of the guards had disappeared. She hadn't even met any on her way out, they'd simply vanished. Then the sun came out from behind the clouds and a sparkle of light caught the two agent's eyes. "What -" Clink began as they looked at the spidery thin threads that ran between the buildings.

His fingers brushed one of the threads, just ever so slightly. Next thing they knew, the world was a mass of fire, smoke and debris. A series of explosions left their ears ringing as the building crashed down around them. The pair was thrown in opposite directions to lay flat on their faces, gasping for breath.

"Clint?" the Black Widow called out weakly after the booming and crashing had subsided a couple minutes later.

She tried to gather her legs underneath her, still disoriented and discombobulated from the blast. When only the silence called back to her, she tried again, pushing the panic from her mind. "Clint?"

A few seconds later, she was about to call out again before the faint reply reached her ears, "'M here..." the man muttered loudly as he tried to pick himself up, getting reoriented.

Blood dripped from a cut on his head and a gash in his leg. "So, I think... it's time we talked to Fury. Well, after we tell the others what happened here," the brunette panted as he walked up to his friend.

"Definitely. Let's get out of here, there should be a jet waiting for us on the tarmac. We'll patch ourselves up," she finally began to take stock of her injuries - mostly scrapes and burns - as she spoke, "And we'll get in contact with Stark."

O.O I finished chapter one already? This must be a record. I hope you liked it. Feedback is appreciated, so loved or hated or somewhere in between, please let me know! (If you haven't noticed, the review button has been revamped and made prettier as of late :D)

See you next chapter!

(or in another story!)

Ravvyn~