Doc must perform a risky operation after an accident; one of the ship's laborers is recruited to replace a missing dignitary; a bitterly divorced man has it in for his ex-wife's attorney.
JJ's former girlfriend Vanessa is back in town, and she still has expensive taste. JJ does not want to tell her that he is out of work and cannot afford to take her out all the time. Bookman's assistant is interested in JJ.
The Doctor must employ a desperate gambit to keep the evil Grendel off the throne. And the Count has a new pawn to play - Romana.
Sketches/Songs: ""Staying Alive"", ""How Can You Be"", Fozzie's dance number, ""Muppet Newsflash"", ""Beethoven's Sonata No.8, Opus 13"", ""You and Me Against the World"", ""Veterinarian's Hospital"", ""Tie Me Kangaroo Down"", ""We'll Sing in the Sunshine""
7-Zark-7 discovers a new planet, which is called Zarkadia in his honor. G-Force learns that several mysterious plane crashes have been occurring on the planet, so Mark travels undercover to investigate. There, he meets Dr. Sweet, who has developed a compound that can render Spectra's latest weapon useless. Sweet hid his creation in his nephew's toy, whose father was a pilot of a plane lost and spends all his days at the airport waiting for his father to return. When it seems like the pilot does indeed return, Sweet is first very happy his brother was back, but then realizes it wasn't him and finds the imposter trying to break into his personal safe. It turns out to be Zoltar, looking for the compound. In the meantime, Mark discovers Spectra is using a giant mummy to bring down the planes, and the rest of G-Force joins him, using Sweet's compound to destroy the mummy. With the compound secure, Spectra will never be able to use their weapon again.
David 'Brown' and a young widow he has never met before are framed for the murder of her husband by a corrupt sheriff and his men. Handcuffed together, the two of them make their escape.
Arnold ignores warnings and continues to drop water balloons from the balcony. Mr. Drummond's decision to punish Arnold for the prank with a spanking becomes a learning lesson for Willis too, when he insists that he be the one to spank Arnold -- but where's Arnold?
Quincy's latest ladyfriend moves into a new apartment and accidentally discovers two mummified bodies. He finds himself up against a group of oddball residents when he tries to find out what is going on, who the bodies belong to and where they came from.
A rich gynaecologist is attacked by a gang of villains who rob him of his suitcase.
Danno is surprised when he bumps into a former flame and even more concerned when she seems to be involved in criminal activities.
Happiness and loneliness haunts us all. Mork activates his time machine to age himself to be a companion to Mindy's grandmother after she feels all her friends have passed.
After watching the launch of a rocket ship, Chief Anderson leaves with Secretary Clayborne. But it turns out that Secretary Clayborne is an impostor.
Dutch and Eunice say goodbye to Jessica and Chester, Burt tries to end his relationship with Sally, Chester disappears, and Elaine is kidnapped.
A stockbroker leaves Wall Street to become a beggar; a rookie cop, assuming Harris to be a felon, shoots at him.
Christmas is approaching, and Lifeline finds itself having to play Saint Nicholas when a wounded Group Captain is discovered by a group of abandoned children fending for themselves, who are prepared to sell the officer in turn for food and presents. However, Albert fears that it could all be an elaborate trap set up by the Germans. Meanwhile, Brandt finds his loyalties to Germany divided after recent events and confides his worries to Kessler.
A serpent is attacking oil refineries. After her father is killed in one of the earthquakes, Debbie Harland blames Mark for not being able to help him. Mark then needs to balance helping Debbie with saving other refineries.
The Bradford children plan a party for Tom and Abby's anniversary and Nicholas fell left out. Tom and Abby unknowingly bid against each other for ""A Christmas Line"" tickets for their anniversary. Nicholas accidents set fire to his room, destroying the anniversary present Tommy was making for Tomand Abby. Feeling like the family doesn't want him around anymore, Nicholas runs away to find Sam in San Diego.
In San Diego, Nicholas is taken in by Joe Simmons, an old con man and bum who was a friend of Sam's. He then performs his best scam trying to get Nicholas back to the Bradfords. Believing that Nicholas is at a friend's house, the Bradford's work on repairing Tommy and Nicholas room.
Mrs. Slocombe thinks she's finally got her man, a bouzouki player in a Greek restaurant. The staff plan a reception at the store to help keep costs down, and her American uncle plans on giving the happy couple a house. Before they can leave for the church, however, the best man arrives with bad news, forcing Mr. Tebbs to don the garb of a Greek vicar and Mr. Humphries that of the bridegroom.