1 - Wtf has happened to my local park?

We've all grown up watching the MCU movies, but what happens when the Avengers are suddenly transported into our universe from 2014?

Meet Arty Hemmings, a normal 17 year old, who just so happens to stumble across the Avengers at her local park. Of course, she can't do much to help them, but can she? Nah, she's just there as the entertainment she thinks, but Tony Stark turns her into an asset to the Avengers and offers her a life she can't resist.

*Warning: contains mildly frequent language dotted around in chapters*