Electric Heart (Pietro Maximoff)

The story follows 17 year old Alyson Parker (Peter Parker's older sister) throughout the timeline of the MCU.
(starting just after The Avengers, then into The Winter Soldier, all the way to Infinity War and Endgame, then it carries on into Wandavision, No Way Home and Multiverse Of Madness etc. There will also be a couple of solo chapters that tell her and Pietro's story between movies)

Alyson starts as a 'student' in the summer programme at Avengers tower, but in reality she wants to get close to Tony Stark and Bruce Banner, thinking they'd be able to help with a ... little issue.

A couple week's prior, after diving into her late father's research, Aly got into an accident involving a little blue vial found in her father's lab. Her brother Peter found her unconscious with electricity radiating all over her skin.

Confused and unable to control her powers she applies for the programme at Avengers tower...

After some questionable events, her powers are revealed and Bruce Banner get's to work studying her blood whilst Natasha trains her to fight without using her powers, which weaken her every time she uses them.

But when Natasha goes off on a mission with Steve Rogers to find the Winter Soldier, Alyson follows them... leading to her getting taken by Hydra, where she meet's the twins for the first time.. and the story only expands from there.