When their parents' seedy old motel burns down on the same night they are visited by a strange man covered in skeleton tattoos, Cyrus, Antigone, and their brother Daniel are introduced to an ancient secret society, and discover that they have an important role in keeping it alive.

Twelve-year-old Henry York, finally reunited with his family, works with them and the Chestnut King, the long-deposed and mythic leader of the faeren people, to destroy Nimiane and her forces of evil.

Barely escaping sinister threats by Dr. Phoenix and the transmortals, Cyrus and Antigone journey deep into the caves below Ashtown, where they seek help from those imprisoned in one of the region's oldest tombs.

Presents the continuing adventures of Henry York, who has been living in Kansas with his cousins, where he discovers doorways leading to other worlds and becomes involved in a multi-world struggle between good and evil.