What Lies Within (Avengers Fanfiction)
Tony Stark went missing after Civil War, but nobody cared enough to go searching for him, all believing that he just needed some time on his own to pout. Meanwhile he has been horribly experimented on, and transformed into something other than human.
When he escapes, he finds himself running into three children who seem to be just as lost as him, just as hunted, just as afraid. He remembers then, and he knows he has to protect them.
Now, Tony Stark, Cooper, Lila, and Nathaniel Barton must survive the dangers that surround and chase after them while they desperately try and find the loved ones they miss so much.