While gearing up to face the TV cameras as captain of his high school's team on "Quiz Off," Alex panics at first when a teammate drops out. He then launches a major tutoring program for his sister Mallory.

When pretty Carrie Newman and her mother Julia come to visit the Keaton's, Carrie's forward behavior sends Alex into a panic.

When Mallory's boyfriend Jeff arrives home from college and wants to go steady, she's elated, but it's soon apparent that he's a little awed by school and merely grasping at the familiar and she must decide whether to ""let go"" and accept the change in their relationship.

Mallory is nervous that Jeff may have met someone new, outgrown her or forgotten her. When the opposite appears true, and he announces plans to quit school, she refuses at first to see the obvious; that he's just a little overwhelmed by college. What's thrilling to her is self-destructive on Jeff's part.

Alex anxiously awaits a crucial college recommendation from his English teacher and urges Steven and Elyse to butter Mr. Tedesco up on parents' nite at school - but the obnoxious Tedesco is so insulting that Elyse slugs him, and a horrified Alex entreats Steven to make amends.

The usually calm and non-violent Elyse is amazed and ashamed at her uncharacteristic behavior, though Tedesco ""asked for it"". Steven visits him and after being subjected to disparaging remarks about his wife, winds up repeating her deed. Finally Tedesco, who does recognize Alex's intellect, accepts an invitation to the Keaton home where he alienates everyone again. Alex must decide whether a glowing recommendation from an influential but disgusting man is worth groveling for.

The Keaton family adjusts to life with the new baby but while everyone caters to the new arrival, Jennifer struggles with jealous feelings about not being the baby of the family anymore.

When Steven and Elyse realize that Jennifer feels left out, they overcompensate by trying too hard to make her feel loved.

When Steven's recently divorced brother Rob arrives with his son and daughter for a visit, the Keaton's become a sounding board for their relatives' family problems. In the wake of his divorce, Uncle Rob has given up his job as a CPA and is enjoying ""working in the great outdoors"" as a telephone repairman, a considerably less lucrative career which his teenage daughter Marilyn feels is a great hardship on the family, and particularly on her.

When Uncle Rob's daughter Marilyn stays out all nite with a Marine she meets while visiting the Keaton's, the family becomes painfully aware of her deep-seated anger with her father over her parents' divorce. Rob is left feeling stunned and hurt, as the Keatons begin to realize that communications between their beloved relatives have completely broken down.

The following morning, when Marilyn comes home and flatly refuses to talk to her father, the Keatons jump in to try and help. While Elyse shepherds everyone out for ""a walk"", Steven stays behind with Rob to discuss Rob's feelings about his guilt over the divorce and his fears about confronting his daughter. Things don't improve when Marilyn tries to leave a day early for her mother's house and ends up in a screaming match with her father.

Deeply troubled, Rob finally forces himself to corner Marilyn and press for an honest talk. And as he opens his heart to her, she finds herself unable to resist the power of his love.