Adopted by Tony Stark, Y/N is quick to become an Avenger. Eager, loving and funny Y/N is perfect inside and out. Or so it seems.... only her and her dad know the truth of her past, and when Bucky Barnes makes a reappearance things start to get complicated. Through it all though she does catch the eye of a heart broken man who will do all he can to Shield her from the world as it burns down around them.