Well, here is the 2nd chapter that you've been waiting for. I don't own any of the characters, I just own the plot. Continue... :)

Tony flew onto his sunlit tower, his iron man suit being taken away piece by piece until it was completely gone. When he got inside the tower he realised all the other avengers were there. "What are you all doing in my house?" he asked with a raised eyebrow. Steve replied "did you forget we had a meeting tonight?" his tone laced with boredom. Tony looked up "umm let me think about that... yes," he said in an amusing tone. Bruce gave small laughs and Natasha rolled her eyes. "Thor here yet?" asked Steve. Bruce shook his head, "we will just have to start without him" he said.

"So, any of yous find out where Loki is?" asked Tony, he was now sitting in a very comfortable chair, in a very relaxed position. Steve spoke up "no luck, that guys slippery as a wet snake" he said with a slight growl. Bruce then decided to once again join in the conversation and piped up "Loki would only being staying under the radar if he was planning something, so we should probably all be on alert for him to make a big introduction." he said. Natasha banged her hand on the table, "Yes! But in the meantime Clint is going to keep being Loki's mindless pet!" she half yelled. Tony then opened his mouth to say something but JARVIS intervened. "Master Stark, there are two teenage boys on the balcony of your tower."

Jack and Hiccup were currently on the balcony of stark towers, they had a great view from up here. Jack was leaning casually against the wall, and Hiccup was walking along the narrow silver bar of the balcony, if he looked to his left he could see the wall of the tower, if he looked to his right, he could see a 1000 meter drop. At this moment, he was extremely glad that he had amazing balance skills. "Nice view" commented Jack after a while. Hiccup nodded in agreement and swung round and began walking down the bar again. Suddenly non other than the avengers burst through the door, they weren't suited up, but looked pretty surprised and angry, and in Steve's case - concerned. Hiccup fell off the bar in surprise, but managed to hand on with one hand and swing himself back up.

"Woah kid! Take it easy," said Bruce, he looked worriedly at Hiccup. "What are you kids doing on my roof!" asked Tony. Hiccup and Jack looked at eachother "they can see us?" asked Hiccup surprised. Jack nodded his expression one of disbelief. The avengers looked at eachother with confusion written across their faces. Jack then leapt up onto the bar as well. Tony meanwhile was looking at them, the kid that had leapt up on the bar had white hair and blue eyes, and the kid that was already on the bar had almost glowing green eyes. They both had extraordinary balance and seemed to not be the least bit afraid of falling. Suddenly the white haired kid walked over to the brown haired one and whispered to him, the brown haired kid nodded. The white haired one suddenly pointed to behind the avengers and said "THERE!"

None of the avengers bought it. But then they heard a crackling noise and all turned around, there was a thin layer of ice spreading all over the window. When Tony turned back to the kids, all he saw was a pair of heads going over the bar. "HEY!" he yelled and ran over to the edge, he saw the two kids falling towards the street, he called JARVIS and leapt off the edge, the suit was catching up to him, it then proceeded to envelop him and about 5 seconds later, he was in his Iron Man suit. He caught up with the two falling kids, but they suddenly took off... flying. Tony almost fell out of the air, but then regained his senses and flew after them. Steve also jumped off the roof and onto another, he could do that, being a superhuman and all.

They didn't know where these kids came from, but what they did know, was that they:

1 - were not human

2 - could fly

3 - were going to get caught

There we go, chapter 2 over. Thnx for reading :)