The Secret Service refuses to grant Les credentials for a Presidential press conference, suspecting him of having radical affiliations. It turns out that the man who raised Les wasn't his father, and that his real father was a card-carrying Communist.
As Donna and Ray tie the knot, Lucy competes for Miss Young Dallas. Meanwhile, Jock and Miss Ellie continue to feud.
When Ruth insists that Kip indulge a new client, Kip walks out, expecting Henry to follow him.
Mindy goes away for the weekend, and Mork goes crazy missing her. The Orkan elder comes to visit and regrets that Mindy isn't there. He tries to clone Mindy, but each clone is worse than the last.
In her cab, Elaine picks up a woman who turns out to be her old high-school rival, Mary. Elaine is embarrassed that she is a cab driver, especially since Mary heads a prestigious ad agency, so to save face, Elaine makes up a story about having a wonderful boyfriend who is a Columbia University professor. Over the next few days, Mary calls Elaine to try to arrange a dinner with their respective boyfriend's, but Elaine keeps making excuses, as she is ashamed that she made up a lie about having a boyfriend. When Elaine is about ready to confess her lie to Mary over the phone, Alex grabs the phone, pretending to be Elaine's boyfriend, and accepts her dinner invitation for that evening. At dinner, Alex is so charming, in an effort to make their relationship look very loving, that all of a sudden, Mary and her boyfriend become jealous that they don't have such an exciting relationship. Meanwhile, even Elaine is swept up in the moment, and is taken by Alex's romantic acting job. Having d
Ripner is suing Harris over the lawyer's portrayal in the detective's novel; Wojo asks Barney's daughter out on a date; a sporting-goods storeowner takes the law in his own hands.
Stanley Perkins comes again and eventually says he is suffering from a nervous break down. Because of a new singer at The Dew Drop Inn that pays too much attention to Toni, Jason has problems. Rose gives Stanley a gold watch.
T.C. makes a late-night flight to land on a tanker, but on the journey back he is cornered and arrested by the Coast Guard for transporting drugs. Magnum and Rick are certain of their friend's innocence, but are shocked when he intends to accept the charges and refuses their help.
Polly Carmody, a young 9 year old girl, is murdered and found in a refuse bin. The police quickly pick up a suspect but Lt. Alex Markasian thinks that he doesn't fit the profile of a child murderer. He is much more interested in the fact that the 'father' of Polly is in fact her stepfather, and has only been in the house for a couple of months. When the arrested suspects blood type doesn't match the blood found on the victioms clothing Donald Thompson, the stepfather, becomes an even more likely suspect. This is made even more likely when Alex and Quincy discover some disturbing things in Thompsons' background.
After luxury spaceliner Titan is struck by an asteroid, Astro and several others escape to the moon. They land in a crater with an atmosphere and Astro discovers the wreck of a Russian spacecraft from 1990.
Through Blair's makeup artistry, 15-year-old Kimberly discovers she can pass for 20, but when she accepts a date with a 25-year-old and the passes start flying, she finds there may be more to being older than looking it.
To strip mine the entire area, a ruthless mining tycoon is driving cattle ranchers out of business by poisoning the livestock via the stream that waters the properties. The Harts get involved when Jennifer's colt is poisoned.
Because she's never been to his house or met his mother, Joanie thinks that Chachi is ashamed of her. Fonzie invites the Cunninghams over to the Arcola's for dinner on Chachi's behalf. Fonzie surmizes that Chachi is embarrassed of his mother and uncle and of the fact that they're poor.
Winchester is sent to inspect sanitary conditions on the frontlines, while the rest of the camp plans a surprise anniversary party for B.J.
When Jim learns that a brand new hospital still has no medical staff, but hundreds of civil servants working there, he proposes that half of the civil servants be sacked and use the money saved to open wards with medical staff.
Walter takes Steven to a bordello to try to ""straighten him out"". Something goes wrong at Matthew and Walter's rig, Steven is blamed for sabotaging, and though he's innocent, he looses his job. Blake's plan now is to take Walter and Matthew's rig when they're in trouble. Krystle doesn't like Blake's methods in his work. She pawns an emerald necklace and loans Matthew the money to help him. She makes a false copy so Blake won't understand it's gone. In the end, Matthew and Krystle kiss, but Krystle breaks it off and leaves.
Adam and Mary move back to Walnut Grove so that Adam can start a law practice there. Adam's first case involves a person who has been swindling people in Walnut Grove. Adam believes the person is innocent until he finds out the truth. Adam convinces the jury to have pity on this man who was just trying to help out his family before he dies.