LeBeau aids in the escape of a captured French scientist and his daughter, who are able to make it out of Germany. But now the men of Stalag 13 must find a suitable "replacement" scientist who can present and discuss the study's findings.
The Skipper worries that something is going to happen to him, so he begins to train Gilligan to be a leader. The Skipper then disappears leaving Gilligan in charge, with predictable results!
Mrs Drysdale's father arrives & is a little short of cash. After hearing that Jed next-door is a millionaire he invites himself over for a game of poker. Mrs Drysdale's Father is winning until Granny sits in on the game & then she ends up with all the winnings. Mrs Drysdale's father then shoots some pool with Jed but he loses again.
When Nick is bitten by a rabid wolf, he makes Heath swear not to say a word, and leaves town so his family will not have to witness what will happen to him.
Actually, Will and Dr. Smith went into an elongated orbit and landed right back on the planet, not too far from the Jupiter II.
Kimble reluctantly becomes involved with Stella Savano, the sister of George Savano, a mobster who runs the trucking company where Kimble works. Stella is an emotionally disturbed women with a dangerous attraction to Johnny, the adopted eight-year-old son of Jesse Stangel, Kimble's co-worker. Kimble learns that Stella is actually Johnny's mother. But Stella becomes so delusional that she thinks that Kimble is Johnny's father.
Opera singer Gina Milan (Susan Strasberg) declares there can be no romantic commitment in her life, but allows for one moment of love with Paul.
Opie makes friends with Tommy, the new kid in town. Tommy is a bit mischevious, climbing up on the roof of Andy's building, and taking out a gun from Andy's gun rack even after Andy warns him TWICE not to. Goober gets a dog which he names ""Spot"" (because there are no spots). Tommy hides one of his walkie-talkies in Spot's collar and he and Opie lead Goober on to thinking that Spot can talk. The tables are turned, however, when Andy uses Tommy's love of horses to teach him a lesson.
The Doctor and his friends escape Kembel in the Spar ship but the Daleks force them down on the planet Desperus, where they are threatened by a group of convicts.
Eight-year-old Custer already idolizes Tony and when he sees Jeannie's magic, he immediately tells his parents. Worried about Custer, they sends him to therapy with Dr. Bellows.
A twelve-year-old boy recovers in Doc's office and then goes with a gun after the man who robbed and killed his father.
The Courtneys make social advances toward the Addams Family, mistakenly believing that the socially prominent Abigail Quincy Adams resides there.
Sergeant Schultz, while escorting Newkirk to the dentist, gets drunk and is replaced by a hard-lined, no-nonsense guard. Hogan and his crew must act fast to get the docile Schultz restored to his post.
For his costume for the Water Buffalos' masquerade party, Fred picks a spaceman's uniform. Unfortunately, he goes out on a night when a local radio station has launched a publicity stunt about an invasion by space aliens, a stunt that backfires and creates a panic in the city.
Gilligan's mouth becomes a radio after he is accidentally hit on the head. When their regular radio is broken, Gilligan becomes their sole source of information on the approaching typhoon.
Gidget thinks Russ and Larue are going to get together. Actually Larue is just getting help and advice from Russ.
The Robinson family banish Dr. Smith from the Jupiter 2. He takes refuge in an abandoned spaceship where he finds a machine that can materialize anything. In an attempt to get back on the Robinsons good side he gives them the machine which plays on the family's greed.
Jethro has girl trouble—he can't get one! Jed and Granny decide throw a wing-ding where he and Elly Mae can meet nice young folks. The bank's Ms. Hathaway and Mr. Drysdale help in arranging the musical talent. They mention the Beatles, Byrds, Herman's Hermits, Freddie and the Dreamers and the Animals! There's a very funny extended discussion about the Beatles where Mr. Drysdale schemes a way to get them as depositors for his bank! Jethro and Ms. Hathaway go the Whisky-A-Go-Go and find the Enemys (featuring a very young Cory Wells—later of The Dog Night.) wailing on ""Mojo Woman"" and ""Oh Pretty Woman,"" and ""Turkey In The Straw."" The Enemys sound like the Yardbirds! Lengthy extended scenes featuring the Enemys and wild teens dancing the jerk, frug and boogaloo! Jethro ends up wearing a Beatle wig! There's also a groovy ""beat music"" square dance! Must see rock n roll TV!