“Backstory” is a term used to refer to information that precedes the story at hand. Backstory fills us in on details that will prove important to the story (if it is not important, it shouldn’t be there, and maybe most stories have no backstory). Sometimes backstory weighs so much that it threatens to tip the story over backward; that’s not good either. But you can cut-and-paste until the surface is how you want it to be. Writing is actually a muscular sport and requires a good deal of trying this and trying that. Only if you are willing to do the hard work of lifting what needs lifting can you expect to find your way to that perfect surface.
More… “In the Middle of Things”