Grandpa Sorensen explains to Kendra and Seth that some creatures are helpful, like Hugo the golem, and Mendigo the wooden puppet, and some are mischievous, but playful, like the satyrs.

A magical treaty protects all creatures, including humans outside creatures' domains, so long as the laws of the treaty are kept, the humans and magical beings are safe. Motifs Magical creatures Fablehaven is home to a wide variety of magical creatures of light, such as fairies, nymphs, satyrs, unicorns and centaurs, and dark or inherently evil beings, such as trolls, goblins, werewolves, ogres, giants, imps and a few demons. Then Kendra and Seth must face challenges such as defeating an evil witch and a powerful demon, defending the preserve from an evil society, stopping a plague that changes creatures of light into creatures of darkness, and ultimately, protecting the world from a horde of imprisoned demons. She and Seth drink the magical milk opening their eyes to a whole new, mystical world full of the magical beings of Fablehaven. Once Kendra unlocks the mostly blank journal, she discovers the words 'Drink the milk'. Grandpa Sorenson does not tell Kendra and Seth about Fablehaven being a secret preserve for magical creatures at first, but instead sets up a rather complex puzzle involving six keys and a locked journal for Kendra to solve. Grandma Sorenson is 'mysteriously' missing. When they get there, they also meet Dale, the groundskeeper, and Lena, the housekeeper. The series begins as 13-year-old Kendra, and 11-year-old Seth Sorenson are traveling to their Grandpa and Grandma Sorenson's house while their parents are away on a 17-day cruise. It is followed by the five-part sequel series Dragonwatch. The book series, which includes Fablehaven, Fablehaven: Rise of the Evening Star, Fablehaven: Grip of the Shadow Plague, Fablehaven: Secrets of the Dragon Sanctuary and Fablehaven: Keys to the Demon Prison, is published by Shadow Mountain in hardcover and Simon & Schuster in paperback. Fablehaven is a fantasy book series for children written by Brandon Mull.

Fablehaven grip of the shadow plague