All of the player characters in the new campaign are actually from the future of Sollette.
Well, the future as far as the campaign is concerned. It takes place in what is technically Sollette's ancient past. The Demonic Invasion sparked everything that Sollette has become, and now you find yourself in the middle of it.
Now, you might be intimidated about writing your backstory with this in mind.
Don't be. Write what you want. I don't care what you put as your backstory info. Make it fun! Make it dramatic! Make it full of clowns for all I care.
Trust me; I've got a plan.