You were looting an abandoned area, looking for anything to make some quick cash. As you explore one of the structures, you notice signs of Fatui use. You enter, thinking you could make a fortune with that kind of material. Nothing of value is found. Right as you're about to leave, something catches your eye. A person - no. A Fatui experiment, chained to the wall like an animal, the key only inches out of his reach. He's been there long enough to lose any hope or feeling.