 She and Seth drink the magical milk opening their eyes to a whole new, mystical world full of the magical beings of Fablehaven.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.The story begins with Kendra and Seth visiting their grandparents in Connecticut while their parents take a 17-day cruise.