It was one of those days where everything was awfully normal. Well, as normal as it could be within the Avengers Tower, formerly Stark Tower. Tony and Bruce had hidden themselves in the lab, doing some sciency stuff, Clint was prowling around in the air vents, Natasha was vigorously cleaning her weapons and Thor was off to New Mexico, visiting 'my Lady Jane'.
And Steve? He was simply drawing the exquisite view from the top of the Tower, overseeing nearly everything in Manhattan. It was probably the fiftieth time he'd drawn the very same view, but still he kept doing it. It gave him some mental rest, up there alone with nothing (or rather no Tony) buzzing in his ears. Steve sighed, he was bored out of his mind. Couldn't director Fury come up with some things to do? A mission perhaps?

Tony was happily working on the Mark XII, updating the thrusters and adding some new flares he wanted to test out during the next mission, while Bruce was observing an experiment with gamma radiation. They had been going steady for a while now, ever since Tony had fallen asleep on Bruce's shoulder during a film night a few months ago. Tony looked back at his lover, grinning when he saw the gentle man with anger issues absently cleaning his glasses with an oily stretch of cotton. The very same piece Tony used to clean his hands after working on the hydraulics of a car. Life was good for them, though they could use some action as the Hulk became somewhat restless after a while.

Hawkeye, aka Clint Barton was shuffling down the air vents on Natasha's floor, trying to surprise her after his last fail. He'd looked in her homely living room, but hadn't found her there, so now he slid towards her bedroom, maybe to get a look at his favorite Russian redhead.
'Get your ass out of the vent, Clint, or I'll shoot you out of it.' Came a sudden remark from behind him. It seemed the predator had become the prey in his game. Natasha didn't look very happy with him being in her ceiling, but she seemed mostly exasperated. She was after all his best friend.

So it was one of the more quiet days in Avengers Tower when suddenly Jarvis sounded the alarms.