basically, it was a tie between Run and Join, so I asked my friends at school (yes, I do have some friends XD ) and they said Run, however, I've tried to incorporate both, and I promise it'll make more sense later on. For now though, enjoy! :)

It was a quiet evening. The Avengers (minus Tony) had all gathered in the lounge, and were now watching The Bourne Legacy, much to Clint's disgust, because everyone kept saying how much they looked alike. Steve was on edge however. They had neither heard or seen anything from Tony, or that's what he thought, because he still hadn't seen him, or knew about him being in the Tower for that matter.
He was desperate to go out and search for him, but Bruce had assured him there was no point. He couldn't believe Tony's 'friends' were giving up on him that easily.
A short while later, Pepper arose suddenly, declaring she needed to go and check on something. Natasha, Clint, Thor and Bruce all nodded knowingly and returned to staring blankly at the screen. Steve didn't question anything, presuming she was going to check her 'Twitter' or something like that. Until she came back, bursting through the door, and screeching hysterically.
"Tony's gone! Tony's gone! Oh my God!" She was on the verge of tears, Clint and Natasha immediately ran from the room, their footsteps pelting after them.
"Wait-what?" Bruce asked, standing up and walking over to Pepper, who was beside herself with worry.
"He's gone.. He's no where.. I went to check on him and he's gone.." Bruce looked up as Natasha and Clint re-entered the room.
"She's right. He's gone." Natasha supplied. Steve looked between everyone's anxious faces.
"Wait, Tony's been here?!" He questioned, and Thor's expression clarified his theory. "Why did no one tell me?"
"We didn't think you'd be overly ready, or prepared." Bruce told him, guilt plaguing his face.
"That's my sort of son you're talking about!" Steve roared "of course I'd be ready!"
"Steve-" Pepper cut across him. "He doesn't trust us, what do you think he'd be like with you?"
"What do you mean?"
"I mean Loki's told him something. When Natasha and Clint went on that walk and saw him, they tried to get him back, but sort of failed with Loki getting away with Tony again."
"Why wasn't I told about this?" Steve queried, scowling.
"Because then, while they were on their way back, I found him outside the lab." Pepper finished.
"The Lab? Why?"
"We don't know. He just kind of standing there like a lost puppy. He's been here for a day and a bit. But now he's gone."
Steve face was bright red as he fought the anger inside him. Why hadn't they told him?
"Where do you think he's gone?" Steve asked, looking up.
"I don't know.. He was fine when I left him.. He was playing with his toys.." Pepper said, thinking hard.
Just then, the screen changed abruptly, from the film, straight to another image, an image of a yellow tree against a purple background. It looked like a flag.
"Hello Avengers!" A voice called through the speakers, though no source was being shown on the screen. "It's okay, talk. Demand knowledge and seek truth." Steve bit his lip.
"Where's Tony?"
"You mean you've lost him? Well that was careless of you now wasn't it? You really are a crap father Captain."
It was all Steve could do alto stop himself from charging at the screen and punching it.
"Where is he then?!" Pepper demanded.
"I don't know." The voice replied, and they could almost see the shrug.
"What do you mean?" Bruce asked, pulling up a laptop from God-knows-where and typing commands away madly to Jarvis.
"I mean, I don't have him." The voice replied smoothly.
"End the call." Natasha said sharply, walking briskly over to the TV and turning it off. Pepper and Steve gaped at her.
"Now we won't know where Tony is!" Pepper cried exasperatedly.
"That guy doesn't know where Tony is."
"But how can you even know that!" Pepper shot back, looking like she was about the explode.
"Me and Clint are trained assassins Pepper, we can tell when people are telling the truth." Natasha replied, crossing her arms and standing in the centre of the room.
"Who was he then?" Pepper asked, anger ebbing away.
"I don't know. But I do know the voice." Natasha said simply, dropping her stance a little as she admitted her slight fault.
"Is it only me who is wondering where my Brother is?" Thor asked.
"No. He's vanished." Bruce said, looking up from his laptop and adjusting his glasses. Pepper and Steve exchanged glances.
"You don't think he's got..?" Pepper asked, looking worried.

He felt bad for running off. It was just that, what he'd heard, it was just so big, and he had a feeling they weren't telling him everything.
Tony walked past a shop window with TV's in the window. He stopped and stared into the slightly fuzzy screen and it showed him a picture of a smart looking man, wearing sunglasses, with blackish brown hair. Tony stared at it in interest, as words flashed across the screen.
"Tony Stark's company Stark Industries rises 5% in stocks.."
Tony Stark? He was Tony Stark. That man wasn't. He looked back at Stark Tower. What if..?
He jumped as a hand landed on his shoulder. Spinning around, he looked right into the face of a man he knew. But didn't at the same time.
"Hey Tony, you almost killed me, knocked me unconscious in fact. Do you remember?" Tony shook his head in bewilderment. "Good. Come with me." The man was talking quickly, so quickly in fact Tony couldn't quite process everything he was saying. Realising, Tony shook his head quickly. He wasn't going anywhere with strangers, he wasn't that thick.
"Urm, actually I really should go back to Stark Tower. They'll be wondering where I've gone." Tony said quickly. He didn't want to go back to Stark Tower, he wanted to go and find Loki. But this man was scaring him slightly.
"Fine. Tell your Dad he should have put you on the bottom step like I told him to. You would have been a lot safer."
Tony turned around and began walking back up the street, fully aware of the mans gaze following him. He looked at the skyscrapers surrounding him. This place was too big for a seven year old. He didn't turn as he heard the man call after him:

"You wrecked your life Tony. Loki is trying to help you, and not every Captain is a good one."

10 points to whoever can tell me what they thinks gonna happen! Also, Loki will be in the next chapter, I promise. Thanks for reading so far though!