At the time when the Addams Family are moonbathing, Wednesday recites an incantation that brings Cousin Vlad back to life where he wants to kill Gomez and marry Morticia.
The school board finds out that Wednesday and Pugsley have never been to school due to Grandmama being the one who educated them and sends a written order to Gomez and Morticia to enroll them at once. Gomez later gets a reaction when he hears that Grimm's Fairy Tales has a dragon getting killed.
Pugsley joins the Junior Troopers, gives the house a thorough cleaning, and throws out Uncle Fester's stockpile. The Addams Family is horrified at his actions. Morticia calls a psychiatrist who says that Pugsley just wants their attention and suggests they indulge him.
Morticia invites the PTA to her house for a meeting. Meanwhile, Pugsley wants to go to the circus to see Gorgo the Flying Gorilla. Gomez is concerned, but since the circus is owned by his old friend Oscar Webber, he agrees to take him. Pugsley gets some money from his piggy bank and they go. Gorgo and Pugsley become fast friends, and that night the gorilla breaks out of his cage and goes to visit the boy. Gorgo tries to take Lurch's job and spikes the ladies' tea, but Lurch saves the day.
Uncle Fester's prison girlfriend Cruella breaks up with him upon making parole. Using a dating book, Uncle Fester uses a dating service catalogue to hook up with a hateful woman named Lucretia. At the time when Uncle Fester mistakes a woman named Melinda Carver for her when she is heading to a baby shower and was hit by a rocket, Wednesday secretly administers a prick to her that contains the Love Potion 666 that Grandmama brewed which works too well. When Gomez and Morticia find out, they instruct her to make an antidote at once.
Newleyweds Hubert and Amanda Patterson move in to the Addams Family where they learn that they are their next door neighbors and landlords. The Pattersons work to get out of the lease so that they won't put up with them.
After Wednesday gives Harold Pomeroy a black eye, his smug father Cecil shows up at the Addams Family mansion demanding an apology. Both Harold and Cecil have their different ooky experiences with the Addams Family members. Meanwhile, Professor Simms is hired to help research the Addams Family tree when they get interest in their genealogy.
Cousin Melancholia's fiancé Fred ran off on her and shows up at the Addams Family Mansion in a dispondant state. Morticia hooks her up with a law firm owner named Ralph Harvey when nobody else wanted the offer.
Wednesday unleashes twenty starving baby alligators into the sewers and the police come after her. Gomez and Morticia ground her for a week for cruelty to animals. Not allowed to play with her weapons, start any fires, or torture her brother, Wednesday runs away.
Lurch is invited to the Annual Butlers' Ball, but refuses to go because he can't dance.
Wednesday comes back from school after painting a black rainbow and she got an "F" on it. Her teacher, Miss Crank, says she may fail art if she doesn't use color. So Gomez tries to hire the world famous artist Leopold DaMinci as an art Tutor, but gets Leo DaMinci, an Italian Pizza delivery man instead. Meanwhile, Mama falls in love with the postman, and Fester helps her try to trap him.
Cousin Itt stays at the Addams Family after his girlfriend Contessa found out about his other girlfriends Eudora, Simone, and Lucinda and that he is now broke. After attempts at different jobs, he gets one at the zoo where Dr. Green displays him like the animals at the zoo.
Mistaking two robbers for trick-or-treaters, the Addans Family takes them in for a Halloween celebration. Meanwhile, Wednesday and Pugsley go trick-or-treating as Siskel and Ebert.
It's Thing's birthday. Thing opens Fester's mail and Fester and the family yell at him and none of them remember his birthday, so Thing runs away. The stress of fighting with Thing causes Fester to start growing hair on his head.
Gomez and Morticia are celebrating their 13th Anniversary. Wednesday and Pugsley ask them how they met, so they tell them the story.
Wednesday and Pugsley ask to hear the rest of the story about how Gomez and Morticia met.
Ginger, a girl in prison that Uncle Fester has been e-mailing, is being released and coming to meet him. However, Fester told her he looked like George Clooney, and wonders what he's going to think about his hair, or lack of it. They call a toupee salesman who brings many samples, but leaves them and runs when he sees Kitty Kat.
Puglsey has developed a crush on his teacher and copies one of Gomez' love letters to Morticia. This causes her to think that Gomez wrote the letter.
Uncle Fester reads an article by Dr. Pierre LeBlanc titled "The Dangers of a Happy Marriage" that says some fighting is necessary for a great relationship. He convinces the rest of the family to try to make Gomez and Morticia fight with each other. When their attempts fail, he calls Dr. LeBlanc, who comes and tries to steal Morticia away, so Gomez challenges Dr. LeBlanc to a duel.
Cousin Itt is very disappointed that he didn't get the role of Hamlet at the theatre. Gomez dusts off an old play he wrote, casts Itt as the lead, and hires a director for it. The director refuses to work with Itt because his voice is not decipherable, so Morticia tries to get Itt to slow and lower his voice. Itt's voice changes, but so does his personality.
While his neighborhood is being rebuilt, Gomez' grandfather Grandpapa Addams comes to visit the family and live with them for awhile. While Grandpapa Addams still misses his late wife Delilah, Gomez and Morticia arrange for him to be sent to Club Dead where Grandpapa thinks that they are going to send him to a retirement home.
The Addamses are selecting stuff to donate to the charity auction. Wednesday donates Marie Antoinette. Morticia tells Uncle Fester to donate his iron maiden, but he can't bear to part with it, so he hides inside. When the charity refuses Gomez' offer of a time machine, he donates Pugsley's tiger-head clock instead, much to Pugsley's annoyance! He climbs up the chimney and sulks until Gomez and Morticia each go to the auction to win it back.
Uncle Fester's internet chatroom girlfriend, Yvette, is coming to town and wants to meet him. He feels he is out of shape and wants to lose weight. The family tries to help him and even get him a personal trainer. Meanwhile, Wednesday finds Uncle Ripper's magic kit and plays magician with Pugsley as her volunteer (more like her victim!).
Gomez' old friend Don Xavier Francisco de la Mancha Molina arrives with his daughter Consuela and her chaperone Maria. When Gomez was ten, he had proposed to Consuela. He doesn't remember that, but now that she is turning twenty-five, Señor Molina is here to see them married.
When the stock market crashes, the family thinks Gomez is bankrupt. To make money, Grandmama markets her line of beauty cream, Morticia begins dog-grooming, Lurch and Uncle Fester start an escort service, and Wednesday and Pugsley sell henbane tea and babysit.
Cousin Melancholia and her new fiancee Digby arrive at The Addams Family Mansion but Uncle Fester is suspicious of Digby so spies on him. He overhears part of a conversation and surmises that Digby is a golddigger.
Gomez finds out his life insurance policy was cancelled because his shark-feeding trip to the Bermuda Triangle was deemed too much of a risk. Mr Fielding, an inadequate door-to-door insurance man, sells him a new policy and his boss is irate about it. He lies and convinces Morticia that Gomez will die in six months if he doesn't change his dangerous ways. She restricts his behavior, but is unhappy with the results.
Christmas is coming. The happiness of it horrifies the family, but the gift-giving and holiday spirit is still there. Pugsley sees his belief in Santa dashed, and the family enlists Uncle Fester to dress up as Santa for him...what a sight!
When Morticia rekindles her relationship with her childhood friend, Gomez becomes jealous. Since Lurch is on a surfing vacation, Uncle Fester and Gomez hire a "housekeeper" that they hope will come between Morticia and her old flame.
An errant croquet shot hits Gomez in the head and gives him amnesia. Grandmama divines that he can be cured by another blow to the head. Morticia, Uncle Fester and Lurch try to bring his memory back.
After taking Grandmama's sleeping potion to combat his insomnia, Gomez begins unknowingly sleepwalking at night. Morticia sees him walk out in the middle of the night and suspects he's a cat burglar. She follows him, and Uncle Fester sees her walk out in the middle of the night and suspects she's a cat burglar. They set traps for each other, and when the real cat burglar breaks in, he sets them off.
While powering the train set for a three-engine pileup, Uncle Fester is devolted, and can no longer store any electricity.
Morticia starts a business as a home decorator. Her first client is horrified by the job she has done, however a reporter for a home decorating magazine calls it "the most exquisite example of post-apocalyptic deconstructionism I've ever seen."
Pugsley and Uncle Fester are blowing up manhole covers but accidentally blow up Sam, a passing motorcyclist, who comes crashing down on their lawn. When Fester tries to fix Sam's motorcycle, Sam stops him and end up getting hurt again. Wednesday quickly rushes to his aid and helps nurse him back to full health. Sam is appreciative of the family's hospitality and notices several artifacts around the house, such as Arturo and Pandora's Box.
Morticia takes up sculpting but nobody appreciates her art until Gomez hires a shady art dealer, Sandy Warhol, to tell her that she has true talent. Her art begins to consume her, and Gomez' money.
When Morticia's Cousin Pretensia visits, she brings her "handmaiden", which is literally a hand named "Lady Fingers". Of course, Thing instantly falls in love. However Gomez, Uncle Fester, and Grandmama can't stand Pretensia and harrass her until she leaves.
When Gomez becomes dissatisfied with the local government, he decides to run for mayor. The incumbent mayor sneaks into The Addams Family Mansion to try to find some skeletons in their closet, and he does. Their debate turns into a boxing match, and Gomez throws it, withdrawing his candidacy while exposing the mayor's corruption.
Aliens looking for a power source trace one to the Addams house. After researching TV shows from the seventies to learn Earth culture, they disguise themselves as Greg and Marcia Brady, hoping to be inconspicuous. At the Addams house, they encounter all sorts of ookiness, including a Trainwreck and Moonbathing. They discover that the power source they need is Uncle Fester, and they have a dance contest with Morticia and Gomez to win him. However "Greg" and "Marcia" lose, but after explaining their case, "Greg" comes up with a solution.
The Addams Family records Lurch singing. Gomez pays a producer to promote it, and to everyone's surprise, Lurch becomes a pop sensation. He leaves for a six-month tour in Ghoulapalooza, and the family hires a new butler.
Uncle Fester and Grandmama have been spoiling Pugsley and Wednesday. Loathe to leave the children in their care, Gomez and Morticia enlist Grandpapa Addams to babysit while they go on vacation.
Uncle Fester, feeling unloved, decides to run away to join a mercenary organization. Meanwhile, Wednesday is stalked by a cat but, since it only appears to her, nobody believes her. When Fester returns to say goodbye, the family tries to make him feel loved again.
Uncle Fester falls in love with a TV judge.
Gomez and Morticia look through a photo album and reminisce about Lefty Addams, Cousin Pretzel, and Uncle Pyro, then notice that they have no photos of Pugsley. Meanwhile, Pugsley secretly befriends a stray monkey, then gets lost in a secret passage in The Addams Family Mansion. Uncle Fester and Grandmama find the monkey and think that Pugsley has been transformed.
Wednesday and Pugsley are upset with the contents of their school play. Morticia writes a new one. When the other parents refuse to allow their children to be in it, The Addams Family fill the rest of the roles. Meanwhile, it's "Gotcha Week" so Gomez and Uncle Fester try to outdo each other with more and more violent practical jokes.
When Wednesday and Pugsley are expelled, Gomez and Morticia decide to send them to military school. Wednesday shows the other students her crossbow, Pandora's Box, and her voodoo doll. The General in charge comes as Gomez is practicing a camouflage Trainwreck. He threatens to expel the children so Gomez buys the school, and The Addams Family teach all the classes.
After Pugsley befriends a thoroughbred racehorse, Gomez and Morticia make him give the horse back to its owners. This depresses him so The Addams Family have a day at the races so he can see the horse again. However, when the horse comes in last, Pugsley overhears the owners plan to send him to greater pastures. He and Wednesday steal the horse to save it, but their parents tell them to give it back. Wednesday asks Lurch and Uncle Fester to dress in a horse costume, and they are taken away.
Lurch falls in love with the neighbors' new housekeeper, Elsa, however he is too shy to make a move. Uncle Fester comes to his assistance, but Elsa thinks it's Fester who likes her. Meanwhile, Grandmama's witchcraft license is expiring and she's having trouble passing the renewal test. Wednesday uses Pandora's Box to help her.
Gomez tries to help a depressed Cousin Catastrophia by arranging an opera singing gig.
Cousin Itt is in danger of losing his job as a shampoo spokesman when he starts to lose hair. Depressed, he retreats to his bedroom, and Uncle Fester brews a hair tonic. Meanwhile, Gomez teaches Pugsley how to defend himself against a schoolyard bully.
Lurch's girlfriend Lizzy comes to visit. He told her he was a millionaire, so The Addams Family play along. Gomez and Morticia pretend to be his butler and maid, while the others temporarily move into a hotel. However, Thing discovers she is merely a thief, using Lurch to gain access to the Addamses' valuables.
The city plans to demolish their house to build a new highway, but The Addams Family fights back.
An FBI man overhears Uncle Fester ordering explosives for Morticia's surprise birthday party. He poses as an explosives salesman to infiltrate the house. He sees all manner of Addams ookiness including a Trainwreck, and becomes enamored with Morticia.
Uncle Fester becomes a marriage counselor. His ooky methods seem to produce results, but he thinks all the women are falling for him. Meanwhile, Pugsley learns that his new girlfriend is just using him to make another boy jealous.
A moving company loses a rare Bögendorper piano and the maestro refuses to perform without it. A conniving concert-hall director learns that Lurch's piano is another rare Bögendorper, and convinces Uncle Fester to trade it for an electric organ.
After days of overeating, Morticia's prize carnivorous plant, Cleopatra, loses her appetite only days before the plant show.
Wednesday is assigned a school project on an influential relative. She asks Grandmama to summon Great-Aunt Esther in a seance. Always one letter off, Grandmama accidentally summons up the ghost of her brother Jester, who was a habitual practical joker. He pulls his pranks on everyone, even sabotaging Gomez' Trainwreck. His antics soon wear thin, but the family has trouble evicting him.
Gomez thinks Lurch is being overworked, so he and Uncle Fester build a robot butler to help him. Lurch worries that he is being replaced. Meanwhile, after being struck by lightning, Fester picks up radio signals in his head, but thinks he's reading minds.
The feud between The Addams Family and their distant relatives, the McAddams family, ends... until Uncle Fester takes Pa McAddams on a hunting trip.
Uncle Fester becomes a business tycoon after his skill at demolishing buildings is recognized by Donald Grump. When he becomes too busy for the family, they kidnap him.
The Addams' house is turned upside down when famous director Steven DeVille decides to use it as the locale for his new movie Mansion of the Undead. When all the other members of family are selected for roles in the film, Morticia feels snubbed and tries everything to gain the director's approval.
Uncle Fester accidentally destroys the Bear with his disintegrating ray. Gomez finds that his insurance policy will cover its replacement value, but he doesn't want the money, he wants a new bear. While the adults go on a hunting trip, Pugsley breaks his father's Trainwreck set.
Uncle Fester is asked to stand in for King Lester of Colytonia, whose life is in mortal danger, since they look nearly identical. Meanwhile, the King stays in The Addams Family Mansion. He is at first appalled by the ookiness, but he likes the Trainwreck, the family football game, and Gomez' open displays of affection for Morticia. When an assassin is sent to the house, Wednesday and Pugsley uncover the mastermind behind the plot.
Uncle Fester and Grandmama find a treasure chest inside the safe. Inside, Gomez finds The Tale of Long John Addams and reads it to Pugsley and Wednesday. Their great-great-great-great-great-great-grandfather, Long John Addams, was a pirate. In 1699 he wrote this tale of himself, Lady Penelope, Curly Addams and Pinky.
Cousin Ramone, his wife Putrescence, and their daughter Monday come for a visit. (Son Piggley is in the hospital.) Monday teams up with Wednesday to torture Pugsley. Gomez and Ramone constantly try to best each other at everything, until Ramone challenges Gomez to an auto race, but Gomez doesn't know how to drive.
The Addams Family are preparing for their Bastille Day celebration when The Grim Reaper arrives for Gomez.