Archie tries to impress his boss by making the maximum contribution to his favorite charity and unwittingly donates his body to medical science.
Regan loses his patience with a thug he is questioning about a wages snatch, and soon the press are sniffing round for a police brutality story.
Steve Austin takes the recuperating Jaime Sommers to their hometown of Ojai in an attempt to jog her memory. Unfortunately this only results in her getting violent headaches and confusing flashbacks.
George doesn't know what to do with himself on a Sunday, the only day of the week George doesn't work. Tom quickly points out the obvious that George is a workaholic. Just to spite him, George decides to show him that he can relax and decides to book him and Louise on a cruise. However, Louise and George find themselves with a problem, Mother Jefferson has invited herself along.
The crew of Los Angeles County Fire Department Station 51, particularly the paramedic team, and Rampart Hospital respond to emergencies in their operating area.
Mary, wanting some change in her life, makes the decision to move to a new apartment.
UNIT attempt to track down the Zygon ship while Broton prepares to have the Skarasen attack London.
Following a training exercise with S.W.A.T. officers from another division, Hondo and Street find the dead body of officer Frank Crane with the words ""Kill S.W.A.T."" pinned to his chest. The murder of Crane is the forerunner of a series of attempts to wipe out S.W.A.T. by brothers Mike and Simon Bishop and their fanatic sister-in-law, Joanna, who is convinced that the death of her husband was the result of S.W.A.T. ""brutality.""
Howard insists on joining Bob and Emily's anniversary dinner at a fashionable Chicago restaurant in order to enlist their aid in popping the question to Ellen. But he chokes up in the clutch, and Bob is forced to do the proposing for him.
McGarrett must again face mobster Charlie Bombay when a plane carrying them to Honolulu crashes in the forests.
The City plans to demolish Ed's garage to open a newer, more enhanced power gas station.
The cases of an easy-going ex-convict turned private investigator.
Aunt Esther is fed up with her husband, Woodrow and has decided to end her marriage. She has become convinced that he's seeing other women behind her back and becomes even more convinced when Fred tries to hook him up with a swinger. Refusing to live in the same house with Woody, Esther moves in with Fred and Lamont.
Frank settles in as commanding officer, only to have a new one appointed over his head, one that, to his chagrin, fits in very well.
A confidence trickster comes to stay at the hotel, just after Basil has taken an ad in a posh magazine to upgrade the clientele.
Godfrey's cottage is due to be demolished to make way for a new airfield but no-one can bring themselves to break the news to him until Jones finds out that he already knows. In the end Frazer, knowing the family history of the General in charge, bribes him to get the airfield moved 200 yards. This results in some rather amusing consequences. The door to Mainwaring's bank office is replaced with a paper door, apart from the insult of not having a proper door Mainwaring is even more annoyed at the fact that Pike the Colonel and Jones manage to destroy it within minutes of it being installed.
The Moon is on a collision course with an enormous planet. On a scouting mission, Koenig encounters Arra, the Queen of Atheria. The aged monarch proclaims the collision is a preordained event and must occur for her people to evolve to a higher plane of existence. Now Koenig must convince his staff to have faith and do nothing in the face of apparent destruction.
While a psychopathic killer uses San Francisco hi-rises as target practice, Stone and Keller have to contend with a new Captain who immediately countermands everything they do.