Clint Barton and Natasha Romanoff are on a break in central park. when they find a young girl with a HYDRA jacket on. They decide to follow her. They find out that she is an escaped prisoner of HYDRA and they decide to help her. She joins SHIELD and quickly becomes one of the top agents. Then she joins the Avengers in hopes of taking down the organisation that ruins her life. I only own Katniss and the plot. All other rights go to Marvel.