When Kendra and Seth go to stay at their grandparents' estate, they discover that it is a sanctuary for magical creatures and that a battle between good and evil is looming.

"Very strange things are afoot at Fablehaven. Someone or something has released a plague that transforms beings of light into creatures of darkness. Seth discovers the problem early, but as the infectious disease spreads, it becomes clear that the preserve cannot hold out for long. In dire need of help, the Sorensons question where to turn. The Sphinx has always given sound advice, but is he a traitor? Inside the Quiet Box, Vanessa might have information...

Two hidden artifacts have been found. More preserves face destruction as the Society of the Evening Star relentlessly pursues new talismans. Desperate to stop them, Kendra discovers the location of the key to a vault housing one of the artifacts in Patton's Journal of Secrets. To retrievet the key, the Knights of the Dawn must enter a death trap--a dragon sanctuary called Wyrmroost. Will anyone who enters the sanctuary make it out alive? Or have Kendra...