An explosion kills a man who is discovered to be the advance scout for a hitman. Quincy is in a race against time to find the assassin and thwart the plot to kill a government official at a hotel convention.
Drummond runs into some stiff competition to the candidate he's chosen to head a new division of his company -- his board members think the attractive young executive's sex disqualifies her -- and his family thinks he's being used.
Ralph Hinkley, an average school teacher, is given a suit with amazing powers by aliens. Now, Ralph must decide if he'll use his new powers to fight crime, even though he already lost the suit's instruction manual.
Arkwright once again is struggling to sell goods that no-one wants to buy. He therefore tries a special promotion to get rid of the goods, namely fig biscuits and toilet rolls with messages printed on them.
In order to force B.J. to rob from his own strongbox compromising ledgers, Captain Rutherford Grant orders his henchman to ""apenap""Bear.
Potsie falls behind on his rent and is forced to move back in with his parents. However, after learning that Lori Beth's roommate likes men who live alone, Potsie has to stay in his apartment. He tells Fonzie that he can get quick cash but won't say how.
Jim has the chance of creating jobs, and saving a chemical company, when they are offered the chance to manufacture a highly dangerous chemical, but when the news gets out that it might be too dangerous, he has to back down.
Jessica and Danny are both shocked by the news that Chester is Danny's real father; Burt becomes a media hero because of his attack on Tibbs; Chester and Danny face surgery together.
When Hawkeye can't stop a sneezing fit that has no apparent cause, psychiatrist Sidney Freedman digs into the surgeon's past for a clue to this unusual malady.
Ponch and Jon are hunted by a man who's determined to avenge his twin brother's death, while a perfectionist joins the squad intent on driving everyone crazy.
Furillo's chances for promotion are threatened when a city councilman is implicated in the murder of the teenage prostitute; LaRue continues to look for money for his ""saloondramat""; Fay's obscene caller breaks into her home; and Belker confronts an anti-Semitic cop just transferred to the Hill.
With Nyssa from Traken unexpectedly rejoining the group, Adric aids the Monitor of Logopolis in trying to save the Doctor before time runs out. The Master, at liberty to prepare, is finally ready to reveal his true target, which unknowingly sets off the biggest catastrophe of all time.
Herb's three-martini business lunches with an ad agency representative are causing him to mess up even more than usual, and it begins to seem that his use of alcohol as a sales tool is turning into a drinking problem.
Passengers who search for romantic nights aboard a beautiful ship travelling to tropical or mysterious countries, decide to pass their vacation aboard the "Love Boat", where Gopher, Dr. Bricker, Isaac, Julie, and Captain Stubing try their best to please them, and sometimes help them fall in love. Things are not always so easy, but in the end, love wins.
After receiving death threats, the Governor's new advisor, Clayton Endicott the 3rd moves into the mansion.
David's attempt at a cure is hindered by the other man's exposure to radiation, which revives the murderous Hulk persona the man was cured of many years before. Now, David must produce enough antidote to cure both himself and the other man before more carnage occurs.
While on the way to the Boar's Nest, Bo and Luke are ambushed by an escaped prisoner, who steals the General Lee and plans to hunt down Boss Hogg. Later, Boss finds out that the prisoner is an old foe who is set out to get revenge on Boss