The Doctor's companions appeared on the top of the Avengers tower just as night fell.
"We traveled forward in time a little so we could work while it was dark and most people would be asleep." River said. "Now, what we need to build is a machine that will send a message to the Tardis telling her that the world is in danger and we need the Doctor's help." Jack laid a blueprint on the ground and River placed a knife in each corner to hold it down. "Donna, you and Clara work on programming it. Amy, Rory, you can work with River on building the machine itself. Martha, you and I will work on building the base."
They all went about their assigned jobs, Clara and Donna sitting on the side to begin programming, while everyone else started building in the center of the platform.
"Sir." Jarvis said. "There are people on your landing pad. They appear to be building something."
"Why is everyone breaking into my tower today?" Tony said as he snapped a bracelet onto each wrist.
"Anyone else want to come? How about you Capsicle."
"Sure thing, Stark." Steve grabbed his shield and together, they walked outside to Stark's landing pad.
"Hey, Captain, you want to grab that big piece and put it here." Martha said, not noticing the arrival of Steve and Tony.
"Ma'am are you talking to me?" Steve said.
Martha turned around. "I was talking to Jack. Who are you?"
"Captain Jack. No." Steve thought "It's not possible. It couldn't be the same one. That Captain Jack had been alive in World War II and there are no older people on the landing pad."
"I'm Captain Steve Rogers."
As he said this, Jack turned around.
"Steve Rogers."
Steve just stared. It was the same face and the same voice that Steve had known all those years ago.
Steve walked up to Captain Jack and suddenly they were hugging.
"How are you here? And how is it that seventy years passed and you look the same as you did during the war?" Steve asked when he released Jack.
"Well, it's a very long story and not completely mine to tell. Great, I'm starting to sound like River. Anyway, I will explain soon enough, but can you make the other guy back off." Jack replied, noticing Tony was growing mad while he waited on the sides for Cap to stop catching up with Jack.
Steve walked back to Tony.
"Stark, cool it. I can guarantee that the brown haired man is not a threat. And I trust him, so if he says that the others are not a threat I'll believe him."
Tony stared at Steve. "Do you know him?"
"That's Captain Jack Harkness. We fought in the war together."
"Well then bring them inside. We'll have some drinks and introduce them to the rest of the team."
Tony went into the living room. Steve motioned for Jack to get his friends and come inside too, before going inside himself.
Jack, River, Amy, Rory, Donna, Clara, and Martha all followed the blond inside. They found themselves in a spacious, hi-tech living room with several couches and a large flat screen TV on one side and a bar on the other.
"Hey everyone. Get up here. There are some people you ought to meet. You should come too, Winchesters, since they may be hanging around awhile." Tony said over the speakers, before putting on some music.
The Doctor's companions settled down on one of the couches, River perching on the armrest, while Jack leaned against the back, watching the elevator. Suddenly, the music changed.
This is a world of dreams and reverie
Where I felt the stars explode around me
A grass blade flashed with a gleam as it slashed open a moonbeam
And I stared back breathlessly
As mountains of fruit tumbled out I barely had the chance to shout
Oh strawberry avalanche, crash over me
Out of the corner of his eye, Rory saw Clara hand Martha's phone back to her and smirk.
"Jarvis, why did you change the music?" Tony shouted from the bar.
"I'm sorry sir, my system was hacked into."
Then the elevator doors opened and Sam, Dean, Bruce and Natasha walked out, while Clint appeared from an air vent above the bar.
"Where's Thor-." Steve began asking, right as a loud bang was heard coming from the landing pad.
Thor walked in through the sliding doors, and sat down at the kitchen table.
"Stark, why have you summoned us here? It's the middle of the night."
"Why don't you ask the people who were on my launch pad in the middle of the night?" Tony replied.
Steve intervened before any fighting broke out. "This is my good friend Captain Jack Harkness and his companions. Jack and I met in the army."
The song I used is Strawberry Avalanche by Owl City.
Well, here are more people meeting each other. I think the villains will get introduced soon.
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