Addams Family Values features talent such as Raul Julia, Angelica Houston, Christopher Lloyed, Carol Kane, Christina Ricci and Joan Cusack. The movie tells the story of Uncle Fester's (Lloyd) longing for the romance that Gomez (Julia) and Morticia (Houston) have shared for so many years. The story begins with Pubert's delivery as the family waits to find out if it's a boy or girl; but as Gomez states; "It's an Addams", which says it all. Ever helpful, Grandmama (Kane) realizes that the children are suffering from jealousy and advises them that it's just not true that when a new baby arrives one of the other kids has to leave, at least not anymore. Gomez and Morticia believes that what's needed is a nanny for the children. After several unsuccessful prospects, the position is filled by Debbie (Cusack), who seems to be a perfect fit for the family.
Debbie, it turns out, is on the lam and looking for a new wealthy husband, preferably Uncle Fester and his money. It seems the sweet and innocent Debbie is the Black Widow Killer and has been through a number of husbands and their fortunes. Wednesday and Pugsly quickly see through this disguise, which prompts Debbie to suggest shipping them off to Summer camp. Despite their misgivings, Gomez and Morticia, believing the children wish to go, send them to Summer camp, leaving Debbie free to make her moves on Uncle Fester.
Fester and Debbie marry and after several botched attempts on his life Debbie decides to eliminate the whole family. Luckily, thanks to Pubert's intervention the showdown to see who comes out of the fray alive finds the Addams on top.