One morning Henrietta mysteriously disappears, and Henry discovers a journal entry which tells him how the cupboards work. He crawls through a cupboard in Grandfather's room to find Henrietta. After several strange adventures he finds her in the ballroom of a palace in a ruined city, but they are unable to return until the master locks of the cupboards are set back to their location, and they hide in a dark cupboard. They witness a group of people with wolves called "Witch-Dogs" kill a party, but they escape. Meanwhile, Uncle Frank attempts to find the two of them while Aunt Dotty tells Penelope and Anastasia that Frank came through the cupboards long ago, and it was their great-grandfather who invented the cupboards and made them work. But Frank is too late when a Witch and her cat emerge from the Endor (8th cupboard) cupboard and stab Frank. The witch is Nimiane, and she has been strengthened by Henry's blood. Aunt Dotty, Penelope, and Anastasia run up to see what's going on, and Aunt Dotty falls into a similar state as Frank. Henry and Henrietta emerge from the cupboard and struggle with the witch, but it is Zeke, a boy who was just dropping by to see if Henry was ready to play baseball, who knocks her out with a swing of his baseball bat. The children push her through the cupboard into an unnamed place, and Dotty and Frank are rushed to the hospital where they are healed.