When Fernie finds herself lost in the Gloom mansion after her cat appears to have been chased there by its own shadow, she discovers a library full of every book that was never written, a gallery of statues that are just plain awkward, and her own shadow taking part in a dinner feast! Along the way Fernie is chased by the People Taker, who is out to capture her. It's up to Fernie and Gustav to stop the People Taker before he takes Fernie and her family!