So why Lawrence? Is it magic-based? Do you have a nexus here, or did something important go down that draws the demons to this place? That has us starting here instead of someplace like ... I don't know, Tampa? Or San Fransisco? I think I remember reading something about another prophecy. Or maybe just a prophecy. Sorry, they're usually common in my world ... so, it's another for me.
Are the demons trying to end the world? It's not really a surprise that that much hasn't changed.