The Antarctic, the near future. A strange seed-pod is unearthed from 20-thousand-year-old ice. The Doctor and Sarah go to investigate, but are too late to prevent the pod infecting a scientist and unleashing a threat to all animal life on Earth...
The cases of an easy-going ex-convict turned private investigator.
Fred has been watching way too much television and Lamont suggests that he go out and get some exercise. Fred scoffs and refuses which leads to an argument which results in the television breaking. Lamont refuses to get it fixed until Fred agrees to start exercising. Lamont later brings in a doctor to hypnotize Fred to help him get over his television addiction.
An Eagle and its crew are crushed to death by an enormous energy field in space. When one of Alpha's astronauts is possessed by the anomaly, he tells them the energy field is a living space brain, which responded to the 'threat' with antibodies Finding the Moon on a collision course with the Brain, the Alphans make plans to avoid the same fate as the Eagle.
John-Boy meets up with a runaway girl named Muffin who's 12 years old. Muffin tells him that she was abused and is trying to find her mother. John-Boy takes her home and she fools everyone but Grandpa.
Wojo must escort a bigamist to Cleveland, even though he is (guess!) afraid of flying. Meanwhile,the bigamist's New York wife shows up. Also, a man turns in an unmarked envelope containing $3500 in cash.
Juan, because of his love for animals, decides that he would like to be a veterinarian. A guidance couselor quickly thwarts his dream, until he performs an emergency operation on his pet hamster.
A cop seeks to catch his brother's murderer by going undercover in an illegal gambling operation.
The dare-devil detectives become involved in the wild world of professional wrestling when they visit Mac Johnson, a retired colleague, now a promoter in the sport, who has some information for them about a recent suspicious accident in which a man was killed.
After a crime lord is arrested, Baretta must jeopardize an undercover policewoman to stop an escalating war of succession between gangland factions.
Chico is having some women problems. A girl that he likes will not go out with Chico because he looks too much like her ex-fiance.
Mary is excited when she has the chance to participate in a state-wide math competition. The problem is that Charles can't afford to have her go.
With Potsie away, the guys try to get Fonzie to take his place as the band's singer for the Senior Dance.
The family is being investigated by the FBI because they are suspected to be security risks due to Michael doing research about and communicating with a Communist country for a term paper.
Frank has Hawkeye up on charges of mutiny, for usurping his authority when Potter was away on leave, and Frank was the C.O. The Judge Advocate, Colonel Carmichael, tries the case; BJ, Potter, and Radar are in attendance of the preliminary hearing to offer support for Hawkeye. There are several versions of what happened: according to Frank, he was trying to hold the 4077th together during heavy casualties when everyone else was falling apart; according to The Eye Of The Hawk, BJ and Radar, it was Frank who was out of control with his regimen. Finding no evidence of the alleged mutiny, the judge drops all charges against Hawkeye and puts Frank in his place (but will he stay there?!).
It looks like Archie has turned over a new leaf when he befriends a Jewish man.
Maude decides Henry Fonda would make the perfect President of the United States and starts a campaign to get him elected, with or without his approval.