A crate that washes ashore contains a top secret plastic explosive developed by the US Government. The Castaways make use of the plastic in a variety of objects, including nails for the Skipper, dishes for Mary Ann, jewelry for Ginger, golf balls for Mr. Howell, and even fillings for Gilligan's teeth, unaware that once hardened it becomes a dangerous explosive which will detonate on impact!
In order to boost business Goober has a contest at the gas station. The printer accidentally prints a ticket for $200 and Floyd wins the ticket--and Goober can't pay it.
The foreman of a neighboring ranch frames Joe for murder as part of a scheme to get his employer's property.
The TARDIS materialises on the runway of Gatwick Airport, where Polly witnesses a murder only to be kidnapped before she can report it.
Part 1: Down on his luck drifter is offered a dangerous, but profitable job of mixing nitroglycerine for outlaws who are using it to rob banks. George also falls in love with a saloon girl and begins a business venture with his earnings.
KAOS steals a water evaporation formula (DRY-UP) and blackmails the country by threatening to dry up all its water.
Klink becomes convinced that he is marked for assassination by a mysterious "Mr. X" after a series of close calls at the stalag.
Kirk and Spock must travel into the past in order to correct a change that will alter history.
Darrin has a hard time with an eccentric client named Madame Maruska, whom he thinks is Endora. Because of his faulty knowledge, he loses the account. When he learns that Endora did not mess with him, he apologizes to Madame Maruska and still doesn't get the account. It's up to Samantha to win her over using magic.
After Dr Smith is turned away from camp yet again, he awakes from a nap to find he has been tied up by little mechanical men. The Robinson's camp is invaded the mechanical men of INDUSTRO, who claim that they want a leader..their leader. The Robinson's learn that the Robot is what they want, and that if he is not surrendered the mechanical men will attack. When the Robot surrenders, the mechanical men realise he is not the ""evil"" leader they wanted and they subsequently switch his personality with Dr Smith. An attack occurs when Dr Smith returns to camp wth the voice and personality of the Robot, which Don finds hilarious, and uses to full advantage. An attack ensues and the mechanical men are defeated and turn Dr Smith and the Robot back.
Kimble, working as a truck driver out of Portland, Oregon, becomes romantically involved with the radio dispatcher Barbara Wells, unaware that she is a convicted embezzler on loan through the state prison's work-release program. Distraught after her parole is denied for another six months, Barbara flees to Seattle where Kimble is staying and asks to take her to Canada with him. But when Kimble learns the truth, he decides to take her back to Seattle. Meanwhile, Barbara's parole officer, Art Meredith, soon stumbles upon Kimble's true idenity and decides to set a trap for him to bring both Kimble and Barbara back to Portland.
A United States astronaut finds his life vastly complicated when he stumbles on to a bottle containing a female genie.
Nick goes to find the daughter of a seriously injured ranch hand, with unexpected results.
The Professor sees the arrival of a homing pigeon on the island as an opportunity to be rescued, and immediately begins to feed it a special diet designed to strengthen it so that it can fly again. In an attempt to speed the recovery time, the other Castaways also feed the pigeon, causing it to become too fat to fly. The pigeon is also trapped for a short while in a cave by a ""deadly six-foot black morning spider.""
Karen Mueller (Barbara Stanek) claims to be the illegitimate daughter of Paul's friend Spencer Holt (John Forsythe), and her appearance at the very end of his Gubernatorial campaign presents the candidate with a difficult choice.
Opie has a hard time finishing one of his homework assignments.
The Cartwrights play host to Russian royals, who are the target of jewel thieves.
The Doctor and Polly manage to save Jamie from the Macra and then try to show the Pilot who is really in charge of the colony.
After important scientists begin to go missing, Max and 99 go undercover to solve the mystery.
A secret military document is mistakenly hidden in Colonel Klink's topcoat at a party, and a desperate Hogan must nab the document because of both its value to the allies, and because Klink will be charged with treason and replaced at Stalag 13 if it is discovered in his possession.