Greg writes a song for his brothers and sisters and reserves a recording studio for "The Brady Six." However, before they can record, Peter's voice begins to change and starts cracking uncontrollably.
Jan finds an old photo of her Aunt Jenny at her age and discovers that they look exactly alike. But when she discovers what she looks like now, her excitement changes to disappointment--until she pays the family a visit.
Bobby takes advantage of Greg after he wins a bet that Greg can't do twice as many chin-ups as Bobby. Meanwhile, Carol tries to figure out which woman at Mike's high school reunion is his old sweetheart, "Bobo."
Peter "Scoop" Brady gets a job for the school paper, and discovers that writing nice things about classmates has fringe benefits. So when he makes a "D" on his final exam, he tries a snow-job article about his teacher to improve his grade.
Alice's cousin Emma, a former master sergeant, takes Alice's place while she is away, and she subjects the Bradys to a demanding military-like routine that makes them feel like they've been drafted into the Army.
Cindy is jealous of her older sisters and doesn't want to be treated like a kid anymore. Bobby tries to cheer up by pretending to be a "secret admirer." But what will Bobby do when Cindy sets up a date for them to meet?
Marcia's class nominates ugly duckling Molly Webber for Senior Banquet Night host as a joke. Marcia decides to give her a makeover so she can win. But what will Marcia do when she discovers at the last minute that she's Molly's competition?
Carol's minor parking lot accident turns into a nightmare when the other driver claims it was her fault, exaggerates his damages, and then takes her to court.
The Bradys go on vacation to Hawaii. While there, Peter and Bobby stumble upon an ancient Tiki idol that some locals believe brings bad luck to the person who is touching it.
After bad luck continues to befall the family, the Brady boys set out to learn about the ancient tiki. They learn the tiki is tabu and must be discarded at an ancient burial ground.
The Brady boys arrive at the cave to return the idol to the burial site, only to be held prisoners by an angry archaeologist who lays claim to the cave and believes that they stole the idol.
Marcia is apprehensive about her first day of high school, so Mike asks Greg to help break the ice for her. Meanwhile, Peter tries to make a working volcano for the Science Club.
Peter has a crush on Jan's new friend but every plan to impress her backfires. Inspired by "Cyrano de Bergerac," he launches a final plan to win her over with Greg's help but it also backfires when she falls for Greg instead.
The boys try to spook the girls in the middle of the night with a ghost, so they try to get revenge by giving them a taste of their own medicine. But after Alice criticizes them for being so scared, the kids collectively have a new target.
Greg and Marcia recruit their parents to participate in Family Frolics Night at school. Alice is upset with Sam when he passes a chance to be her date to the event to go to bowling practice, so the girls launch a plan to change his mind.
Jan feels disrespected and ignored by her brothers and sisters, so she tells everyone that she wishes she was an only child. Meanwhile, Carol and Alice have a competition over who can cook the best strawberry preserves.
Mike thinks Greg wants to be an architect after reading Greg's school essay, but Greg doesn't want to hurt Mike's feelings and tell him the truth. Meanwhile, the other Brady kids also begin thinking about their future careers.
The kids give Alice the cold shoulder after they think she has broken their trust, so Alice decides to leave her job as housekeeper. However, the kids soon regret the decision after the new housekeeper teaches them a lesson.
Peter tries out for the role of George Washington in a school play, but gets the role of Benedict Arnold instead. But he then wants to quit the play altogether when his classmates start branding him as a "traitor."
