You were part of the avengers team, really close with the entire team, mostly bucky, there was something more going on. Until a mission a few months ago. It was brutal, loads of fighting, blood, killing, you died on that mission. They all grieved you. A few months later there has been an intel on a new Hydra base. As the avengers go, they realize that maybe you weren’t dead. You were kidnapped by Hydra, put in Cryo, tortured you.