Eddie needs an impressive pet to take to the school pet fair, but Spot, the fire-breathing monster, is too shy to come out of hiding. Eddie decides to take Igor the bat, but Igor is insulted by one of Herman’s wisecracks and flies away. Without Eddie’s knowing, Grandpa changes himself into a bat to impersonate Igor. This causes trouble when Eddie gives Grandpa to another student whose father wants to send him to outer space on a scientific mission.
Balancing private investigation with legal gymnastics, Mason tries to iron out a case of embezzlement and murder.
Darrin forbids Samantha to attend her cousin Mario's wedding in Egypt. Endora, who is livid, states that Darrin is in "big trouble". Darrin gets a new assistant named Gideon Whitsett. Darrin is convinced Gideon is a warlock enlisted by Endora as a series of events makes Darrin look bumbling and stupid in front of a new client, and in turn makes Gideon look fantastic. Samantha uses a little magic to find out that Gideon is actually a conniving young man.
After seeing Elly May in a bathing suit, hippie Sheldon Epps crashes his car. When the Clampetts see this, they take him inside their house in case he is injured. He is healthy, but sticks around for Elly, driving Dash Riprock off.
A man who knew Kimble during one of his disguises, meets him again. He tells him that on one of his hurried, silent departures from a town, he left behind evidence which indicated he was dead and an innocent man is being held for his murder.
Embassy walls and diplomatic immunity hide the kidnapped colleague of agent John Drake. Drake comes to the rescue when the man's wife approaches him for help.
Goober starts to annoy Andy and Barney by hanging around during their dates with Helen and Thelma Lou. They decide to set him up with a girl he likes, only to find they now have twice the trouble.
Ian and Delos are forced to fight each other for their freedom while the Doctor has to perform for Nero's court.
In a test of a deadly new missile, called "Operation Powder Keg," the Air Force chooses an "uninhabited island" which just happens to be Gilligan's Island. When the rocket lands and does not explode, Gilligan is chosen to crawl inside to defuse it, because he is the only one that can fit inside.
Chief Joseph has come to town suffering from pneumonia. When he and his party are refused lodging at the hotel, a stranger steps in offering his room. Local sentiment is against this and like a boiling over teapot, trouble begins to brew.
Fed up with doing so many domestic chores, Fred moves his family to the Bedrock Towers, a fully automated complex--where he takes on the nighttime job of "new resident stationary engineer" (aka janitor) to help pay the rent.
The Addams family hopes to vacation on the moon, but needs to raise a billion dollars. Using Gomez's new supercomputer, the family schemes to make the money by betting on horse races.
Before a big mission, Savage is injured with a piece of shrapnel by his heart and consigned to the hospital. He meets a gunner from Major Cobb's crew Sergeant Aaronson who has just seen his best friend Saul Barstein die and he looses his will to live. He and Savage form a bond. To save Savage, Dr. Kaiser calls in his mentor Dr Simon Lewis a cardiologist to operate. The aircraft carrying Lewis crashes and Lewis is killed, forcing Kaiser to operate - successfully along with a blood donation from Aaronson. Savage & Aaronson help each other recover. The big mission is to the Ruhr Valley, after which Aaronson & Ivy get married.
Promising to behave when she meets Darrin's parents, Endora turns on the charm and is promptly accused by Darrin's mother Phyllis of trying to steal her husband Frank's affections. Frank takes Endora to a play when Phyllis refuses to go. Phyllis wants a divorce when Frank doesn't come home that night, but he actually locked himself out and stayed at the club. Endora and Samantha use a little witchcraft to get them together.
Dr. Quest responds to the distress signal from a fellow scientist, who has accidentally unleashed an (invisible) energy monster on a South Pacific island.
Eddie wants to quit school because all the kids there call him Shorty. Grandpa helps by fixing a potion to make Eddie grow six inches overnight. Instead, the potion causes the young Munster to grow a full beard and mustache.
Elly is disappointed about losing Dash to Miss Jane, so Jed and Drysdale try to fix everything. And Granny is trying to figure out why Dash is going for the plain Miss Jane instead of her gorgeous granddaughter. Another actor, Biff Steel, is set up for Elly, but, once again, he sees Miss Jane and figures she is Miss Clampett.
While working as a chauffeur for a wealthy family, Kimble learns that the teenage daughter of the family is dating the pool cleaner. While chaperoning a party for the daughter's friends, Kimble throws out a unruly young man who crashes the party. But Kimble is soon faced with a little blackmail when the man turns out to be a crime buff and recongizes Kimble from a police magazine.