AN: hello. Yes. This is my Avengers one shot. Need some science bros feels? I think you'll like this then. (No slash, strictly bros)

Written for Heroofthe13thDay. I hope you like it! I've never gotten requests before, sorry it took so long (o~o;;)

For Tony, the day started out normal enough. Well, as normal as things could be when you happened to be Iron Man. And since Pepper was away for the weekend he was making a general mess of things. With no one around to rein him in, Stark was at liberty to do as he pleased, which was never a good thing. Half finished experiments were strewn about the manor, music blared from every speaker, and the kitchen... well, let's just say Tony did not know how to cook. He was in the middle of tinkering with some insane device when Jarvis interrupted him.

The music volume automatically turned down as the mechanical voice began to speak. "Proximity alert. Sir, you've got mail."

Tony sat up, confused. Pulling off the pair of goggles he had been wearing, he replied disbelievingly, "Mail? Put up the front door camera feed, Jarvis."

A screen appeared next to him and he immediately rolled his chair closer. Tapping it lightly, he focused it and zoomed in. Indeed, there was a man there. The stranger jogged up to the front door, dropped a small package in front of it, knocked a few times, and then left. Tony rotated the view and got a look at the car. Scanning it, the computer pulled up the stats. It was just a regular delivery truck. Nothing suspicious there.

He drummed his fingers on the table, humming curiously. He didn't usually get mail delivered directly to the Stark manor. Unless he ordered something. Intrigued, Stark finally made up his mind. Grabbing a scanner from amongst the mess of machinery, he walked briskly for the exit. When he made it to the lobby, he hesitated at the door. Running a quick scan over the area, he didn't pick up any strange energy readings or anomalies. Convinced there was no immediate danger, Tony quickly snapped the door open, as though to catch any surprises waiting for him off guard. But there were no surprises. Only a small box wrapped in brown paper. There were no markings on it, but it seemed innocent enough. He considered for a moment that this was probably a bad idea. Shrugging, Stark grabbed the box anyway.

Many scans and tests later (performed while Tony was at a safe distance and behind a wall of blast proof plastic) he decided it was safe to open. The only unusual thing about it was that it was shielded against any type of x-ray device. Which meant Stark had no idea what was inside. So he thought he'd better find out.

Still not taking any chances, though, Tony opted for some remote control arms to do the unwrapping for him. When he moved his arms, the machines would move the same way so it was rather easy. Once the paper was out of the way, he carefully pulled open the flaps and upended it.

What tumbled out was something he least expected.

It was Bruce. His friend, Bruce Banner. Tiny. Shrunken to only a few inches in height. Unconscious, but very much alive.

It was so surprising that Tony was actually frozen in shock for a moment. He didn't know what to do, what to think. But that only lasted for a short time. Stark quickly snapped out of it and got to work. It would take everything in his immeasurable skills set to figure this one out.

(Banner POV)

/Banner... Banner/

Bruce drifted through a dreamy darkness. He thought he heard someone calling his name, but it was distant, fuzzy.

/Bruce.../

Slowly, his consciousness drifted to the surface and he became dimly aware of a dull headache. A small groan escaped his lips. Bruce attempted to move his limbs but they felt like lead.

"Hey, glad to see you're finally waking up." This time he heard the voice clearly and immediately recognized it as Tony Stark's. It was strange, though. He sounded like he was trying to speak softly, but it was unusually loud in Banner's ears. "How're you, uh... feeling?"

Frowning, Bruce wondered at how awkward the question sounded. He was growing more concerned by the minute. As feeling slowly returned to his body, he realized that he was lying on his back on a cold, hard surface. He also had no memory of the past few days.

He tried to speak, "hmmpf." Okay, that didn't really work out.

"I'll... Take that to mean not very well, then. Look, you're going to have to trust me on this. Really, just, don't freak out, okay. Actually, better yet, don't even open your eyes. Just relax right there, maybe go back to sleep. That would actually, probably be best. Trust me, don't open your eyes, go back to sleep, simple really. I swear I'm going to fix this."

Now Bruce was really worried.

His eyes snapped open. Even this small action doubled the pain in his head. At first, he couldn't see anything, but as the world swam into focus Bruce recognized the ceiling of Tony's lab.

"Wh- what... Happened?" He finally managed to gasp.

"I was hoping you could tell me. You kinda just showed up on my doorstep, so I have no clue. But, we'll figure it out."

/figure what out? What was it that needed fixing?/ These were questions Banner desperately wanted to ask, but couldn't quite get the words out. He closed his eyes, the glaring light was doing nothing for the pain in his head. All he could hear were strange mechanical beeps and whirs. What was Stark up to? Focusing all his energy into his arms, he tried to move them. It was hard, at first he could only wiggle his fingers, but strength gradually returned to him. Soon after, he felt like he might be able to sit up.

With slow, deliberate movements Banner pushed himself into a sitting position. Suddenly, he felt something large press against his back, steadying him.

"Careful," It was Tony's voice again, closer this time. "Don't push yourself."

Slowly, Bruce cracked one eye open. Then the other one. At first he was confused. All he saw was Stark. Nothing unusual about that. Then, he realized that that was all he saw. Tony's face filled his entire view. His friend was now a giant.

But as he looked around, Banner quickly realized what the problem was. Stark wasn't huge, he was just tiny. When he looked over his shoulder, he saw that the thing holding him up was Tony's hand. He felt the Other Guy begin to stir as icy fear crept over him.

"What the hell?" He muttered hoarsely.

"Tell me about it," Tony replied. And then he smiled. A large, confident smile. To his own surprise, Banner found himself relaxing at the sight of it. It was cocky and self-assured, the kind of smile he was used to seeing on Tony. It meant that despite the situation, Stark still believed he could do anything. That in itself was comforting.

"I've been running some tests. DNA and scans mostly." Stark's voice interrupted Banner's thoughts. He had turned back to his technology, removing his hand from behind Banner in the process. Performing a series of motions, Tony skimmed over the data he had collected.

"The results have been quite fascinating. If you're feeling up to it, you should join me. I'm sure the two of us geniuses working together can unravel this mystery."

With a smile of his own, Bruce stood. He was a little unsteady at first, but once the dizziness passed he felt like he could walk again. Moving closer, he scanned the screens Tony had pulled up, trying to absorbing the information they contained. The glaring light and technological jargon, however, made him feel like his head was about to explode. He quickly turned away in disgust.

"You alright?" Tony was looking at him again, concern written on his features.

Banner nodded half-heartedly, "yeah. Just got a doozy of a headache is all."

"Best cure for that is sleep. You should get some more rest."

Before Bruce could point out that there was no where to sleep, Tony stood and slipped off his outer jacket. Setting it on the table, he sat down again with a pleased smirk.

Banner gaped at him for a moment. "Tony, I'm not sleeping in your jacket."

"Why not? You'd fit perfectly in one of the pockets." Now Stark had a smile on his face that said he was having way too much fun with this.

"It's- that's- I-" Bruce stuttered, unable to come up with a viable excuse. He didn't want to sleep in Tony's jacket that was now the size of a small hill in front of him. It was far too surreal.

"Just try it," Tony insisted.

Bruce was actually feeling extremely tired. And he didn't exactly have a lot of options. So, he he began to walk around it, trying to find the most comfortable looking spot. Finally, he did come across a pocket, and it did look terribly inviting. With a sigh of resignation he crawled inside. He was asleep within moments.

He had nothing to worry about. After all, they were both geniuses, weren't they? They'd have this mess sorted out in no time.