While trick-or-treating, Francine meets an elderly woman with a very mysterious past; Binky finds himself at Mr. Ratburn's amazing haunted house; and Arthur, Buster and Ladonna fear the tree house may be haunted.

The kids believe Santa will never find them when the Circo gets stuck at the South Pole on Christmas Eve. Luna helps the kids work to save Christmas, learning about holiday traditions from around the world along the way.