Buck, Wilma, and Hawk are confronted with a bizarre riddle on an alien planet they are exploring for crystals to power the Searcher. Part of the riddle is the connection between a young woman and an eerie, mummy-like creature they encounter on the planet. Meanwhile, on the Searcher, the android Crichton believes he has discovered the link -- one that is crucial to the success of their mission.
Tom Marshall, the new minister, comes to Walton's Mountain and shakes up the congregation. Toni moves into the Baldwin's home and she tells the family she's Jewish. Toni and Jason decide to get married.
A young boy, Jeffrey, dies when he falls from a building, after being chased in there. After the autopsy a doctor turns up wanting to have the brain. Jeffrey had Tourette's Syndrome and the doctor wants to try and find out what causes it and how to cure it. This is the only way he can research it as the drug companies don't think they could make enough money to make it worth their while.
A school field trip is interrupted by a robot constantly lying about a impending earthquake.
Tommy and Ernie, back from college with a ""preppy"" look, run into Jill, Tommy's old girlfriend. When Jill picks Ernie over Tommy, David helps him realize that reliving the past is not the real world. David moves into a singles-only apartment building. Upset by Tom's refusal to give him money, Nicholas gets a job delivering a rival newspaper
Arnold's tenth birthday party means a lot to him, but for some reason it means a whole lot more to the one person he's determined won't be invited -- a pesky young lady who always tries just too hard to be friends.
An employee delivers some papers to Jonathan, along with evidence of a murder. She hides the clue in Freeway's toy and the Harts are held hostage by the murderer.
Fonzie is shot, presumably by Potsie, during a weekend trip to Potsie's uncle's cabin. Fonzie, Chachi, and Roger each describe their versions of what happened.
Stacks is abducted by a demented rock musician named Dante and it's up to B.J. to find her before it's to late.
When Jim learns that he can block civil servant’s honours, he blackmails them into cutting their budgets, but when he hears that he might be in line for an honorary degree, he has to back down.
Matthew finds the guy who really sabotaged the rig. Steven is offered his job back, but turns it down. Claudia learns about Matthew's relationship with Krystle. Lindsay is upset, thinking that her parents HAD to get married just because of her when she was born. Steven's boyfriend Ted tries to contact him, but Fallon does everything she can to stop it and keep them apart. Blake finds out that Krystle is on birth control pills and assumes she's not interested in having a baby. He gets both mad and drunk and forces Krystle to a rough sexual intercourse.
Blake apologizes to Krystle about his behavior, and she forgives him. Michael has found out about Krystle's pawning and tells it to Fallon. Matthew and Walter finally strike oil. Claudia goes out with a guy she meets and almost has an affair with him. She manages to pull out, but later she has an affair with Steven. Lindsay starts finding out about it.
Caroline is crushed when she learns she is no longer able to carry a baby, and fabricates a pregnancy to deal with the pain.
One of Margaret's nurses tries to hide her severe drinking problem, and Hawkeye is scorned after a practical joke he plays on Winchester backfires.
A messenger brings a message from the scheduled guest star -- Benny Brillstein, the Yiddish yodeler. Benny refuses to be on the show, so Kermit asks Chris, the messenger boy, to be the guest. Chris knows a joke, so Kermit introduces him as a comedian.
Nurse Gladys Emmanuel, having seen Granville struggling with the washing, tells Arkwright that he must buy a new washing machine. Arkwright has to come up with a plan so that she thinks he has done as she requests. He gets Neville to drop off a new machine, sneak round the back of the shop and take it away again, leaving behind a second-hand machine instead!
Ponch's recruits have their work cut out for them, and it's going to take more than good looks to take down an entire criminal operation.
After hearing the romantic poem, Tom wrote for Helen for Valentine's Day, Louise longs for a romantic gift. However, when George forgets Valentine's Day and offers her money as a gift, a major argument erupts. This leads George to have a love song written for her.