The Bombs have dropped 250 years ago, the Vault we were living in became to dangerous since the overseer went mad and destroyed the very machine that provides energy and in turn gives us clean air to breathe, so we took to the wasteland, leaving the protection of the vault to the mad man that was our overseer, we discovered a tall building a couple days afterword and mad it our home, taking in strangers every once in a while, but we need to send parties out to gather supplies every now and then, but we live here in the harsh world of the wasteland and their is plenty to worry about, there is Raiders, Feral Ghouls, Tribals, DeathClaws, the Gang known as The Red Rockets, we did make a ally with the group with a gang as long as we provide shelter for them, The Marksmen, they provide protection as long as we provide them with a home and food. Welcome to the world as it is.