Lily Lightfoot can make weird things happen, just by telling a story. It's a gift she can't always control, making her the queen of seventh grade outcasts. She can't make a million dollars appear out of thin air or make it rain cupcakes, but it's not for lack of trying. More than anything, she wants to see her mom, who's left her in the care of her unconventional grandmother, Gwendolyn, and her only friend, Peter.
When Lily finds a strange fairytale book, she's drawn into a fantasy world where her mother waits for her. When her grandmother admits to Lily they are fairies, hiding in this world from dark forces in another place, Lily is convinced the book she's been reading is real. According to the book, those dark forces now threaten to destroy her mother. What Lily doesn't know is they are already hunting her as well. Despite the dire warnings of Gwendolyn and Peter, Lily embarks on a mission to find a way into the fantasy world to save her mom. The events she sets into motion with the telling of a story will change all of their lives forever.