Don Drysdale's tips for Greg on his baseball playing go to his head. Which leads to Greg deciding to not go to college and he even starts to think about dropping out of high school.

Tired of being the middle blond girl of the family, Jan tries to alter her appearance by buying a black wig, which she intends to wear to a friend's upcoming birthday party.

A commercial producer discovers the Brady family while they are grocery shopping, one afternoon. He quickly wants them to be in a laundry soap commercial and soon the problem is whether or not to do the commercial since they don't use the product.

For a joke, Molly Webber, a plain Jane, is nominated for hostess on Banquet Night. This practical joke sends Marcia on a mission to transform Molly into a knockout and she succeeds but discovers she may have succeeded to much when she finds herself running against her.

Marcia's got a new job working after school at a ice cream parlor. With both school and work, Marcia has little time for her boyfriend who, fed up comes into the parlor with another girl. Meanwhile, Marcia suggests Peter for a job but when he goofs off she is the one who fires him.

Marcia becomes involved with Jerry Rogers, a quarterback for the Fairview team. Greg immediately tells Marcia the only reason he's dating her is to get his playbook, a notion Marcia scoffs at, but no one is scoffing when he actually does swipe the playbook.

After meeting an astronaut, Bobby and Peter begin wondering about life on other planets. Their wonder turns to excitement when they claim to have spotted a UFO and camp out in the backyard to get it on film.

Almost 20 years after the start of the orignal "Brady Bunch", the kids are grown up and have kids of their own. Everyone is having a wonderful time back at the family house for Christmas, until Mike learns of a structural problem in one of the buildings he designed. As he is inspecting the problem, the building collapses, trapping him inside. As the whole family waits by the pile of rubble, they fear the worst. Will Dad be all right?