I am going to run one for some players in my town but I'm having trouble thinking of a great overall story arc, I have some encounters and stuff planned but can't figure out the big overall thing. Should I have everyone be from a vault having grown up in it, or should I have them from a settlement. I was thinking maybe something like the vault gets broken into and a bunch of people are slaughtered, leaving only a few dwellers left the 5 go out in search of answers. Any thoughts?