"You lost me the day you agreed."
Natalia Romanoff, younger sister of the world reknown deadly assassin, Natasha Romanoff a.k.a Black Widow, has seen how inhumane her sister can be. Natasha leaves Natalia to fend for herself and this results in Natalia vowing to never ever forgive her sister for what she has done.
But what happens when one day Natalia becomes a HYDRA experiment and gets thrown into the midst of the earth's mightiest heroes, the Avengers?
She is no more the same Natalia Romanoff she was once, she's now a gifted individual. Her innocence has vanished and she puts up walls around herself to protect the little amount of humanity she has left.
What will then happen when she swears her determination to finish the people who ripped her off her identity once and for all? Maybe along the way her walls might just come crashing down, or not.