The Avengers recuse a mysterious woman under the code name Shadow. After being in the clutches of H.Y.D.R.A. all her life Shadow learns how to be normal, trust people, figure out who she is and maybe fall in love, but what she doesn't count on is how hard it is to be normal when you're an enhansed. Her past begins to haunt her in ways unimaginable as she starts to loose her mind.