THE STORY WITH NO NAME~ONE SHOTS

I'm starting this story and I thought of some really fetch (It's happening, Gretchen!) ideas for it. The only little obstacle in the way is that I sorta gotta write an exposition to start it out... And my brain can't come up with one. But Imma let y'all in on a little backstory...
The squad includes seven freshmen at Elsewhere High in KY: Rubin, Jase, KP, Addilyn, Liana, Jaycee, Marvin, and Gidget.
The squad goes on missions to un-haunt places that have been haunted... And let's just say that they suck a little bit at that.