Twlight, Rainbow Dash, Fluttershy and Rarity become reluctant ghost hunters in Canterlot after discovering the old hospital (and the whole city) Pinkie's recovering in is haunted. Who you gonna call? Ghost Buckers!
The mane six are summoned to Manehatten by Princess Celestia, to investigate reports of paranormal activity. But when Fluttershy is targeted by a demonic creature of the past, it might take a little more than friendship to save her.
Twilight and Sunset after colleague start up a canterlot branch of the Ghostbusters after a rash of paranormal event plague the town. (a Equestria Girls x Ghostbusters story)
In response to numerous incidents that can only be described as "supernatural", Princess Twilight Sparkle formally establishes the Paranormal Research and Containment Committee.
A ghost haunts CHS, and Sunset and her friends call upon their Princess friend who sends them experts in the field of supernatural, or rather their successors