Gomez Addams laments the 25-year absence of his brother Fester, who disappeared after the two had a falling-out. Gomez's lawyer Tully Alford owes money to loan shark Abigail Craven, and notices her son Gordon closely resembles Fester. Tully proposes that Gordon pose as Fester to infiltrate the Addams household and find the hidden vault where they keep their riches. Tully and his wife Margret attend a séance at the Addams home lead by Grandmama in which the family tries to contact Fester's spirit. Gordon arrives, posing as Fester, while Abigail poses as psychiatrist Dr. Pinder Schloss and tells the family that Fester had been lost in the Bermuda Triangle for the past 25 years.