Chapter One: Hello and Goodbye

Agent Katherine Pierce, AKA Siren for SHIELD, and an ex HYDRA lab rat could hardly believe that it had been six months since she and Bucky Barnes had been rescued from HYDRA by SHIELD. Bucky Barnes had been Steve Rogers AKA Captain America's best friend growing up back when Steve had been a skinny dweeb and everyone had thought that he had long died, but instead had been renamed the Winter Soldier and had been used by HYDRA to slowly take over the world.

It hadn't been until a few centuries later that HYDRA had decided to take a new member, this time in the form of a newly human Katherine Pierce. They had erased her memories, turned her into a super soldier, and nicknamed her Siren. She had been trying to lure Peter Parker AKA Spiderman to join HYDRA, but had been knocked some sense (literally) and she had managed to regain her memories and break away from HYDRA.

It was clear that the director of SHIELD, Nick Fury had wanted to eliminate them all along, but the Avengers were strangely protective on their newest members and like Katherine and Bucky had pointed out, they were the only ones that actually knew how HYDRA worked.

Now Katherine could believe that six months had passed and they still weren't close enough to figure out where the assholes were and that was making her uneasy. She bit her lip as she remember all that she had suffered because of them memory loss, beating, she had even lost a child.

Now she was standing at JFK airport with the rest of the avengers minus Bucky and Banner. Bruce had promised to show him all of Stark's technology and as it turns out, Bucky was kind of a technology buff even though he had been born in a time when not even the TV was invented.

They were standing in the middle of the crowded airport because Gwen Stacy, one of Katherine's few friends and Peter Parker were leaving to study at Oxford today which Peter managed with a recommendation from Tony Stark himself.

Gwen had wanted to study international law and as good boyfriend Peter had decided to join her and told them that they might need Spiderman at the other side of the pond.

"I'm going to miss you," Gwen hugged Katherine so tightly that Katherine was afraid that she was going to run out of air. "Call me as soon as you get news from HYDRA, anything at all."

"I will, but something tells me that you will be too busy studying the body of a contract." Katherine rolled her eyes. "But I appreciate the gesture."

"Things are going to be boring in Oxford from now on," Peter said grimly. "For some reasons all of the supervillains like to hang out in New York."

"Well, if you ever get bored, we'll be sure to send some your way." Tony Stark winked. Katherine was surprised that Tony was actually awake since he had been drunk all week ever since Pepper Potts broke up with him.

"Drive safely," Steve said shaking Peter's hand. "London is a big city."

Clint Barton snorted. "It's not that big, it's only a little bigger than New York."

"Parker knows what Rogers means," Natasha Romanoff rolled her eyes. She looked at the board behind her. "You guys are going to be boarding soon, you better get a move on."


Katherine was standing in her room at the helicarrier that she managed to redecorate so that it didn't look like a copy of Star Wars. She unfolded the paper that HYDRA had left for her, but the same eerie message was there. This is not over yet, this is only the beginning.

Katherine crumbled the piece of paper in her hand. What could that possibly mean? Was HYDRA trailing her? She could feel her palms starting to sweat in the same nervous reaction.

There was a knock on the door and Steve looked up. "Hey, are you ready?" Steve usually gave Kat a ride on the back of his motorcycle on a Saturday night.

"Ready," she crumbled the piece of paper. She hadn't even told Bucky about the note. "Just getting some stuff organized."'

"Are you sure that we should go over to Starks?" Steve fiddled with his keys. "I know that he's having a hard time ever since Miss Potts left, but maybe we can do something else tonight, we could see a movie in Brooklyn?"

Katherine frowned. "And wont Stark be mad?"

"Stark will just have to get over it." Steve said bravely.

Katherine smiled. "How about tomorrow? I'm not heading to Russia until Monday and a movie would be a good distraction."

Like most Saturday nights ever since Pepper broke up with him, Tony was having a party and everyone was more or less forced to attend otherwise Tony would bitch about it for a month and lock you out of the tower and that was unpleasant.

"What are these?" Bucky asked curiously as he looked at the plate in front of him. Katherine had finally bullied him into letting her cut his hair and he now looked more like himself rather than a grumpy hippy.

"Ceviche," Bruce looked up from his laptop. "Tony had Jarvis look up Mexican cuisine all day."

Steve looked puzzled. "Why?"

"Because my friend, in case you didn't know, Mexico has one of the most beautiful ladies in the world," Tony came into the room in black jeans and an old Homer Simpson t shirt not his best look. "Kitty Kat a word."

Katherine rolled her eyes as she followed Tony to the bar, usually Tony only wanted to talk to her to see if she would sleep with him and then Katherine would politely decline by stabbing him on his toe. "What?"

Tony grabbed a bottle of whisky. "So it's been six months, have you slept with Blondie yet?"

Katherine looked at him in confusion. "Barton?"

"No," Tony looked horrified at the thought. "Steve, are you telling me that you don't notice the puppy dog eyes he has given you since day one, or have you and Barnes been getting frisky under the sheets?"

"Why are you so interest in my love life?" Katherine stopped back. "Shouldn't you be focusing on yours?"

Tony perked up. "Does that mean that you have rethought the threesome idea?"

Katherine wrinkled her nose. "Not the chance, I like to be the center of attention."

Tony smirked. "Feisty."

"There's nothing going on between me and Steve, we're just friends." Katherine shook her head. "And Bucky is just my partner, so I would appreciate it if you kept your dirty fantasies to yourself."

They heard a rumble of thunder and then a crash on the bottom part of the tower. "My car!" Tony cried out.

Natasha smirked as she raised her cup. "Thor's here."

-End of Chapter One-

I know it's been over a year since I promised the sequel, but better late than never. Enjoy!