Billy Bones and his cousin Millicent are ready to explore the world beyond the Biglum mansion. When Uncle Grim and Millicent are captured and taken to the hidden world of Nevermore, Billy begins an adventure bigger than even he could have asked for. As Billy searches for his loved ones, Millicent discovers that some secrets are too big for any Secrets Closet to hold-and may be too dark for any skeleton to overcome.

This sequel offers another spooky romp in the tradition of filmmaker Tim Burton, where friendships grow, betrayals linger, schemes entangle - and heroism appears in the most unexpected places.