As kids, Twilight and Sunset were best friends, but a tragic accident cut their friendship short. Years later, Twilight investigates the incidents at Canterlot High and comes face to face with what appears to be a literal ghost from her past.
Pinkie rarely, if ever, talks about her sister, Inkie, Blinkie, and her older sister Minkie. So what happens when the trio visit the Pink Party Pony? Bad things happen.