As an assistant editor at the prestigious Hanhat Publishers, Evie Southiel is entrusted with fine-tuning the manuscripts of the company's most important authors. Her skills as a book witch allow her to manipulate the stories she reviews and bring them to life.

When her girlfriend steals the secret manuscript of Hanhat's best-selling author and leaks it to the press, Evie is exiled to become a journey carrier with the Pack-Horse Librarians in the eastern mountains.

Timid city mouse Evie doesn't know the first thing about surviving in the wilderness, riding a horse, or dealing with the rugged mountain folk and coal miners surrounding the town of Hevis. She does know books, though, and she's determined to do the best job she can. But that goal is jeopardized when her horse gets spooked on her first solo run, sending her tumbling out of the saddle and into a mysterious woman's life.