Mork discovers that his penpal is living at an insane asylum, and believes that he is Peter Pan.
John is thrown to jail after he tries to defend a black neighbour, who is accused to murdering a white man.
A red cat becomes the only clue to the mystery of children who are disappearing.
Susan brings the baby, Sandra Sue, home from the hospital. When Joan's parents visit the Bradford household to see the family and their great-grandchild, a conflict with Abby occurs as Joan's parents disapprove of the way Abby is raising Nicholas. Grandpa and Abby make up and finally accept Joan's death in a touching story. Tommy gets a job playing the guitar at a male strip joint
Arnold has his day in court when an unfortunate ""train"" of events puts him at odds with a less than understanding merchant.
Two cousins come of age in the early twentieth century, but fate leads them down very different paths.
Louie and Zena are running into trouble in their relationship, and Zena dumps him after confessing that she's been dating Dwight, a bartender at Mario's. A depressed Louie tells Alex about it over drinks at Mario's, and when they suspect that Dwight is working the bar, Alex goes up to talk to him. Dwight then tells him that he's breaking up with Zena for getting serious too quickly. Alex shares the news with Louie, who sees an opportunity to get Zena back on the rebound. Zena initially rejects him, but after Louie gives a heartfelt speech about what Zena means to him, she takes him back, despite her better intentions.
Jessica tells her suitors that she is moving on with her life--without them. Burt and Danny consider responses to Tibbs' blackmail threats. Polly turns down Danny's marriage proposal, leaving him despondent. Corinne departs for a new life in California. Wendy is kidnapped.
Jonathan witnesses a murder. In his rush to approach the scene of the crime, he is hit by someone on a mo-ped. The blow to his head causes temporary amnesia and the killer must get rid of Jonathan before his memory returns.
Fonzie is given the job as teacher of auto mechanics at Jefferson High School. He gets frustrated when his students don't pick everything up as quickly as he did when he was a kid.
On his way to some R&R in Tokyo, a North Korean soldier forces Hawkeye to perform an emergency roadside operation on his buddy.
Franz has survived the car accident, but his right arm has been amputated. He recuperates for a time with Eva and Eva’s lover Herbert. Herbert agitates against Pums’s syndicate, so the boss decides to take up a collection to help with Franz’s medical costs. Franz goes to a red light street and encounters a pimp who offers him a woman he calls the whore of Babylon.
Albert begins writing more frequently to a pen pal of his. He tries to impress the girl he is writing to. The girl also does the same thing. Albert falls in love with her and goes to see her one time. This girl is very reluctant. Albert thinks that she doesn't like him until he sees her in a wheelchair. Both of them promise to continue writing to each other, but this time they would only tell the truth in their writings.
Kermit is plagued by a night of backstage crises. A group of skiers get hurt during the opening number, and after Kermit says that the theater will cover their medical costs, Scooter forgets to cash the check. The Teeterini Family are angry that their teeter board won't fit on the stage. The Swedish Chef prepares spring chicken, and the bouncing chicken drives Kermit crazy. And let's not even talk about the blindfolded, hang-gliding yodelers.
Astronomer Carl Sagan leads us on an engaging guided tour of the various elements and cosmological theories of the universe.
Marshmen invade the Terradonian ship thanks to Romana, who seems to be in communion with them. While the ship's inhabitants flee for their lives, the Doctor discovers a crucial fact why these humanoids can never return to the planet Terradon.
The gang are visiting the Tibetan Mountains and come across a Cat Man and his gang of evil felines. The Cat Man throws Shaggy, Scooby and Scrappy into the shrinking water fountain reducing them to the size of mice. In their tiny form, the three manage to eventually push the Cat Man into the shrinking water fountain and then escape. Once away from the Cat Man's hideaway the three return to their normal size.
The gang are in Arabia where they meet an evil magician who wants to practice his black magic on the three tourists.
Shaggy, Scooby and Scrappy mistake a boat for a floating restaurant. Once abord, they realize their mistake and spend the rest of the cruise avoiding an angry first mate who hates stowaways. To escape this dude, they use a broken lifeboat as a water ski.