After a visit from Don Drysdale, Greg lets his obsession with becoming a Major League Baseball pitcher get to his head. But he eventually learns the hard way that he's not the star he thinks he is.
Greg and Marcia are left in charge of babysitting their younger siblings for the first time, but Cindy's sniffles cast a pall on Mike and Carol's planned night at the theater.
The famous tale of Marcia's first house party, which almost doesn't happen after she is accused of scrawling an unflattering picture of her teacher in class. Marcia's brothers conspire to ruin the party, with the predictable result.
Marcia falls in love with nerdy 13-year-old insect collector Harvey Klinger. Things progress so quickly that they decide to start thinking about their future, leading Mike to subtly intervene.
The boys find a wallet with $1,100 in it and no identification. The boys want the money for themselves, the girls want the boys to split the money with them, but Mike turns to the police to help the owner find the wallet.
School bully Buddy Hinton makes fun of Cindy for her lisp and then gives Peter a black eye for trying to defend her. When Mike and Carol can't get Buddy's parents to listen to reason, Mike encourages Peter to defend himself and fight back.
Jan's first crush is more interested in Marcia. The family plans a surprise party to cheer her up, but she creates an imaginary boyfriend to cheer herself up.
Everyone is mad at Cindy because she is a tattle-tale, but she doesn't learn her lesson until her tattling accidentally gets Alice in trouble with Sam the Butcher.
Bobby falls while climbing into a treehouse. He hurts his ankle and develops a fear of heights. However, he doesn't want to tell anyone the truth, so he uses his injury as an excuse.
Peter is going to miss a big camping trip after he breaks Carol's favorite vase. Each brother and sister confesses to keep him out of trouble. Mike and Carol figure out the truth and respond with an appeal to Peter's conscience to confess.
Jan plays a practical joke on the boys by hiding Greg's science project mouse in her laundry hamper. But after the mouse eats a hole through the hamper and escapes, Jan learns her lesson.
Greg gets caught with cigarettes in his school jacket. He's been caught smoking once before (and quit immediately). Therefore, nobody believes him when he truthfully says they're not his.
Jan is tired of living in the shadows of her two sisters. So she buys a curly black wig to stand out and plans to debut "the New Jan Brady" at Lucy Winters' party.
Peter, Jan and Cindy make the Glee Club but Bobby does not, so Carol buys him a drum set to make him feel better. Peter's football teammates make fun of him for being a singer, until NFL star Deacon Jones sets everyone straight.
Mike's boss, Mr. Phillips, invites the Bradys to spend a day on his boat, but they have to postpone the trip when both Cindy and Carol have to get their tonsils removed.
Now that Greg's in high school, he decides that he's too old and mature for his brothers and sisters and the family camping trip, so asks for his own room and a new wardrobe.
In order to prove that girls can do anything boys can do, Marcia joins Greg's Frontier Scouts group. The boys respond by having Peter join the Sunflower Girls and sell cookies.
Cindy is spooked after seeing a disappearing act at a magic show, and refuses to sleep in the dark. So Peter puts together a magic act of his own with Cindy as his assistant to help her overcome her fears.
Bobby feels like a failure because he is the only Brady child without a trophy. He looks for a way to get one for himself, and a televised ice cream-eating contest could be the answer.
The Bradys fight to save Woodland Park from closing to make way for a new building. But Mike's firm gets the project and he is in charge of the plans for the new building, and Mr. Phillips delivers the family an ultimatum.
An old flame comes to town and begins courting Alice. Sam the butcher quickly becomes jealous of the new suitor, and Mike and Carol are also suspicious of his motives.
Carol decides to write a story about the family to submit to a magazine, but her initial story is rejected by the editor because it is not positive and uplifting enough.
