Outsider yes, but many protagonists are outsiders. A slave? No. We have freedom to do what we like in this world. And who is to say it isn't? The characters in a game or story don't know they're one. We could be in an elaborate virtual reality and never know the difference.

But, fiction or not, there are still people who are protagonists and those who are simply support.

Specifically I am interested in the last moments of the world, and the moments after the change. Known landmarks and areas that are large enough or developed enough that we might potentially find evidence of them if we went to look for them.