You think a fairy tale is just a story.

What if it hides a message?

All Clarity's mom ever gave her is the fairy tale storybook, Goblin Market. Her whole life, Clarity has helped care for her mother, a mindless, shuffling shell of a person.

At sixteen, Clarity meets Audrey, a girl filled with grief and guilt over her brother who has been struck with the same affliction. With nothing but a cryptic clue from Goblin Market, Clarity and Audrey risk their lives to cure the people they love.