Peter is stunned after he runs into a boy who looks exactly like him at school. His look alike comes in handy when Peter inadvertently makes two dates for the same night, one with Michelle and one that he forgot he promised with the niece of Mike's boss.
In an attempt to steal a top secret anti-missile device, Steve's associate and friend Major Sloan is kidnapped and replaced with a robot. Steve must discover the impostor, and keep the device from being stolen and sold to the highest bidder.
James is all excited because he's sure he's going to get a high paying job. However, at the interview, he learns that he's too old to join the company's union. Meanwhile, Florida and the kids get ahead of themselves and throw a celebration party for James unaware that he was rejected.
Lamont and Rollo are planning a double date and they have a plan to get Fred out of the house so they can have it all to themselves. However, Fred catches on and Lamont and Rollo must make do with the cramped quarters of Rollo's apartment, but they still have problems, the girls aren't happy with the entire arrangement, right down to the refreshments, that's when Fred steps in.
The Waltons bring home an 8 year boy named Stevie who is an orphan so he can experience a family setting. Stevie meets Curtis Norton a blacksmith and an immediate bond occurs. Curtis and his wife take in the boy.
Caine recalls lessons learned as a youth when he and a Southern belle are trapped in a deep pit, held there by kidnappers.
Keller goes undercover as an ex-con musician to bust a crooked parole officer and his ring of parolees.
The Chief attends his high school reunion, only to find two of his old classmates recently murdered, and somebody apparently after his own neck. With Ed and Fran to help him, he searches for some clues, which soon prove to be leading him back to the accidental death of another old friend in 1940.
A junkie prostitute holds the key which would help solving the murder cases of her roommate and a local TV reporter.
Potsie is staying with the Cunninghams, and he and Richie sneak out to watch a drag race in which Fonzie is involved.
After Henry, Florida's husband, gets a job promotion, she must tell Maude she's leaving to become a full-time housewife. Maude is heartbroken and is reluctant to hire anyone new but as applicants for the new job come in, Maude finds something wrong with each one. Finally, at the end of the day, Maude must say goodbye to Florida.
The city of Waight is besieged by robots, due to its strategic position.
At last the great day is here - Eddie and Bill are about to become fathers. True to tradition they decide to wet the babies' heads, as usual Eddie takes it one step too far...
Tony Blake is doing a benefit performance on a casino boat when a robbery takes place. As far as the police are concerned, the prime suspect in the crime is Tony's friend, boat operator Ed Cassidy (played by William Shatner), but Tony sets out to prove him innocent.
At Jerry's urging, Bob hires a business manager to handle his money. He ends up living on a meager allowance that affords him only such luxuries as peanut butter and jelly sandwiches for lunch.
Sarah attempts to find a way off the spaceship while the Doctor tries to track down the source of the time displacements.
The crew of Los Angeles County Fire Department Station 51, particularly the paramedic team, and Rampart Hospital respond to emergencies in their operating area.
To relieve her boredom, Mary jokingly writes a humorous obituary of one of the people in the WJM-TV file. Coincidentally, the same person dies the following day and the obituary is read on the air. Lou has no choice but to suspend Mary, but she threatens to quit in response.