Introduction (PLEASE READ)

When the infinity stones are destroyed all their power is lost right?
Wrong.
Whilst the avengers were busy dealing with Thanos they didn't notice all of the stones' power going into one girl.
This girl just happens to be HYDRA's best assassin.
What happens when the avengers find what they fear most... inside a teenage girl?
Will they see her as anything but the cold blooded killer she is?

Obviously I don't own any of the characters apart from a few that I am going to make up along the way.