Sat, Jan 6, 1968
Katie (Tina Cole) becomes a tutor to earn some extra money and is surprised to learn that her first student, Craig Benson (Charles Robinson), is not only a male, but a handsome ex-boyfriend of hers. Robbie (Don Grady) doesn't mind at first, until he learns that the pair took a break from studying without his knowledge. A spat breaks out, and Robbie ends up sleeping on the couch, until both of the newlyweds realize they were partly to blame.
Sat, Jan 13, 1968
Katie (Tina Cole) complains that Uncle Charley (William Demarest) is making her feel unnecessary in the Douglas home. Steve (Fred MacMurray) speaks to Charley, who tries to makes amends by planning a rather bizarre "tea party" on Katie's behalf. Meanwhile, Chip (Stanley Livingston) volunteers for the school dance committee, but the otherwise all-female committee frustrate Chip by ignoring his ideas. However, the girls want to help out after Chip tells them what Uncle Charley is planning for the tea party - party balloons and donuts for dunking are out, scones, silverware and napkins are in. Much to Katie's surprise, the tea party turns out to be huge success.
Sat, Feb 3, 1968
Uncle Charley buys an 11-year-old trotting horse, thinking of the potential purses that the horse could win. With Charley himself driving the sulky, the horse wins his qualifying race, but he discovers his horse's opponents were run-down nags more qualified for the glue factory than competitive racing. So Charley retires the horse at a friend's stable, where Ernie can ride him whenever he wants.
Sat, Feb 10, 1968
Robbie reports to camp for two weeks of military reserve maneuvers, and Katie decides to go along and stay at a nearby motel so that the newlyweds can be near each other. Meanwhile, Uncle Charley and the boys are camping at Yosemite, which also happens to be close to Robbie's camp. During a stroll, Katie wanders into the mock battlefield and gets arrested by Robbie's unit. Later, each of the other family members try to locate Robbie and similarly get detained. Steve heads toward camp to prevent the family from interfering with Rob's duties, but he manages to get captured first by the aggressor team, then by the defender team.
Sat, Feb 17, 1968
Uncle Charley is in charge of Frolics Night at his lodge, but has trouble lining up the entertainment, so Charley joins in with his lodge brothers, dressing in drag for a chorus line number. After the show, Charley falls asleep and embarrassingly has to walk home in costume after waking up. While resting on a park bench, an elderly man mistakes Charley for a woman and begins flirting with him, and Charley gets arrested for hitting the man.
Sat, Mar 2, 1968
The Wong family from Bryant Park drops in on the Douglases unexpectedly while on their way to Hong Kong. Since the hour is late, Steve invites the Wongs to stay overnight, forcing him to cancel the family camping trip planned for early the next morning. The Wongs are too polite to tell Steve that they have family in Chinatown who are expecting them, and Steve make his family promise not to tell the Wongs that they ruined the Douglases weekend plans.
Sat, Mar 16, 1968
When Steve (Fred MacMurray) is promoted to head of the helicopter division, the secretaries snoop into his personnel file and are happy to discover that their new boss is an available widower. Uncle Charley (William Demarest) brings his helicopter-loving girlfriend Sally (Shirley Mitchell) for a plant tour, but when denied entrance, he tells his girlfriend Sally to pretend that she's "Mrs. Douglas", in order for her to get in. Meanwhile, Steve has invited Katie (Tina Cole) to visit the plant and tells her to let people know that she's "Mrs. Robbie Douglas". When the nosy secretaries see Steve with two different women claiming to be "Mrs. Douglas", they suspect that their new boss is a bigamist. Unaware that Charley's girlfriend is posing as "Mrs. Douglas", Steve doesn't understand the stares from his co-workers, as he escorts the two women around together.
Sat, Oct 12, 1968
After Katie (Tina Cole) feels her baby moving for the first time, expectant father Robbie (Don Grady) decides it's time for him to mature and take life more seriously. Meanwhile, Ernie's friend's Gordon (Butch Patrick) has a dog that is also pregnant, with Tramp as the father, so Ernie (Barry Livingston) also wants to be more involved with the birth of the puppies.
Sat, Oct 19, 1968
Steve (Fred MacMurray) meets with a hard-boiled Air Force general (Arthur O'Connell) to sell a company product, but the general - himself a new grandfather - after learning that Steve is about to become a grandfather, becomes an easy sell as he eagerly shares his experiences as a grandfather.
Sat, Oct 26, 1968
Robbie (Don Grady) and Katie (Tina Cole) realize that they will need help with the babies immediately after they are born, and seek out to hire a baby nurse. Uncle Charley (William Demarest) wants the job, and is disappointed by not being asked, so he sets out on a series of baby sitting jobs to gain experience. He panics in his first experience with an actual baby and needs to call in Katie for advice, but he quickly becomes the favorite baby sitter in the neighborhood. While Rob and Katie realize he could do the job, they feel it is too much to ask now that Charley has a successful baby sitting career, but Charley overhears the discussion and realizes that he needs to volunteer for the job.
Sat, Nov 9, 1968
Katie (Tina Cole) feels like she is getting as big as a house, even bigger than her pregnant friend Lisa (Barbara Boles), who is over due. While Robbie (Don Grady) is away on military reserve training (again!), Steve (Fred MacMurray) takes Katie to her OB appointment, where her doctor (Leon Ames) reveals why she is getting so large - Katie is having more than one baby. Katie doesn't want anyone to know before she can tell Robbie, but she's already getting her first labor pains and Robbie cannot be contacted.
Sat, Nov 23, 1968
Rob and Katie bring the triplets home from the hospital and reveal their names - Robbie Jr, Steve II and Charley - much to the delight of their namesakes. But Rob soon tires of all the attention that the triplets get and the repeated questions that everyone is asking - "How do you tell them apart?" But eventually Rob gets accustomed to the curiosity of his friends and neighbors.
Sat, Nov 30, 1968
Feeling that he's not contributing enough to the household expenses, Robbie (Don Grady) decides to quit school, get a job, and move his family into their own place. Rob's college counselor (Vince Howard) urges him to think it over before rushing into such a major decision, and asks the administration office to delay his paperwork over the weekend. The stalling tactic gives Rob enough time to discover that despite the added financial burden placed on his father, Steve (Fred MacMurray) enjoys taking care of his grandchildren, and that he has plans to redesign Rob's room to accommodate Rob, Katie (Tina Cole) and the triplets.
Sat, Dec 7, 1968
It seems that everybody has something planned for Friday night - except Ernie (Barry Livingston). But since this will be the first time Rob (Don Grady) and Katie (Tina Cole) are away from the triplets, they are reluctant to leave Ernie alone with the babies, so they hire a sitter recommended by the family doctor. However, the sitter (Rose Marie) seems to be more interested in watching television than watching the babies. After repeated calls from worried family members, she takes the phone off the hook, but now the constant busy signal causes more anxiety, so the family members all rush home, only to find that the sitter has matters well in hand.
Sat, Dec 14, 1968
When Uncle Charley goes to pick up his date, Sally, he finds that not only has he been stood up, but Sally has run off to Las Vegas to get married. So Charley is in the dumps until a group of women fawn over him when he takes the triplets out to the park, and Charley tells the women that he is the grandfather.