Midnight Rose Sparkle is celebrating her eighteenth birthday, also her tenth birthday without her mother, Twilight Sparkle. The day is dreary at best, until a good family friend, Discord, leads her to her mother's special, personal project. A hidden world within the pages of a book. Hoping her mother is inside, Midnight ventures into The Void to search for her long lost mother... and stop the evil within.
Many centuries ago, after the fall of the Human Empire, Equestria was in a state of devastation, and the Pony population was crumbling. Most of the stallions who fought in the war never made it home, and the mares outnumbered them nine to one. However, because of the war, there were thousands of enslaved Humans available. Businesses were created for the purpose of trading and renting Humans to the many lonely mares of Equestria. This is the story of a professional.