Alex implements a fail-proof, and extremely unromantic, method of meeting the girl of his dreams: He picks her from pictures in the freshman directory. His selection, Tricia, seems to fit his requirements perfectly, but his plan goes off-track when he is strongly attracted to her roommate, Ellen. Ellen and Alex dislike each other instantly, and though he can't figure out why, he finds himself thinking about her constantly.

Alex realizes he must make Ellen aware of his feelings, but she is on a train on her way to marry another man, so he takes drastic measures to stop the wedding. The usually cool Alex decides he must let down his defenses or lose the girl he loves.

Mallory brings home her new boyfriend, Nick, a Rambo-type environmental artist, to meet her family, but Steven and Elyse are shocked by his crude appearance and gruff manner.

When Alex takes diet pills for a lift during mid-terms, his dependency level increases daily. Alex is studying for several tests and convinces Mallory to obtain diet pills to help him stay awake. At his hyperness and irritability increase, so does his dependency on the pills. When he finally gets so desperate that he threatens Mallory to get more drugs, she becomes worried that he is headed for a ""crash landing"".

While Steven and Elyse are away on vacation, the Keaton house becomes a hotel for the weekend after Mallory accidentally crashes her parents' car into a telephone pole and the kids need to raise money for auto repairs. A lot of people are in town for the Leland homecoming game, so Alex decides to take advantage of the situation and rent out rooms but suddenly he's swamped with renters and the house looks like a three-ring circus.

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.

Mallory's boyfriend, environmental artist Nick Moore, swaps his T-shirt, camouflage pants, combat boots and earrings for a three-piece suit and a haircut to impress Mallory's parents, but while Steven and Elyse love the new Nick, Mallory is ready to leave him.

Alex discovers that his idol, young Uncle Ned, has a serious drinking problem when the bright, but ill-fated corporate whiz kid returns for a visit after losing another job.

Alex does some fancy footwork on the dance floor to impress Ellen when he thinks he is losing her because of their divergent interests. Alex feels he has to compete with Ellen's artsy friends for her attention and attempts to change himself to fit into her world.

Alex hires a tutor to help him with math, but his ""teacher"" turns out to be a 13-year-old genius who suddenly becomes more interested in Jennifer than in helping Alex. When Eugene, Alex's tutor, meets Jennifer he loses his concentration and Alex comes up with a scheme that will benefit both him and Eugene.

Elyse's younger brother and Alex's idol, Ned, makes a surprise visit. However, everyone is puzzled by the go-getter corporate executive's suspicious behavior.

With the FBI hot on Ned's heels for embezzling 4.5 million dollars in corporate funds, Elyse's ethical brother and Alex's idol tells the family why and where he hid the money.

Steven's assistant at the station is bright, talented, funny, witty...and in love with him. And it looks like Steven may be returning her affections. It becomes obvious that Steven's assistant, Stacey Hughes, is very much attracted to him. And after a rough evening at home, as brief fling begins to look better and better to him.

Steven has a very difficult time accepting that his youngest daughter, Jennifer,is growing up and no longer wants to ""pal around"" with him. As Jennifer grows and finds new interests, Steven feels rejected because she no longer spends time with him. The situation comes to a head when Steven insists on accompanying Jennifer on her girls-club outing, and she is mortified when he is the only male there.

Seduced by an "older woman" of twenty-one, the hitherto inexperienced Alex is devastated to learn that she thinks of their relationship as casual.

Mallory is horrified and confused when a close family friend and older business associate of her father's makes a pass at her.

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.

On his 18th birthday, Alex defies his mother and goes off with some of his buddies to celebrate at an out-of-town niteclub, and to his dismay, the irate Elyse shows up and confronts him.

Alex is both amazed and furious when a critical admissions interview at Princeton University is shattered by his hysterical sister Mallory, who feels her anger over discovering her boyfriend kissing another girl is more important than his college education. Alex is overjoyed at going to Princeton for the interview, but not too keen about taking his sister along so she can visit her boyfriend Jeff at the university. He drops Mallory off at Jeff's and heads for his important interview, only to be humiliated when he has to leave the meeting to comfort his weepy sister.

Alex courts disaster when he invites two dates to the senior prom and devises an elaborate scheme for escorting each of the unknowing girls on a night to remember. Prom chairman Alex is all set to attend the big evening with an ecstatic Rachel Miller, when he finds that his heartthrob, Jocelyn Clark, has just broken up with her boyfriend. While consoling her, Alex invites her to be his date and finds himself in a major jam. With Skippy's help he tries to juggle both dates, until the truth comes crashing down.

Because of Elyse's pregnancy, the family decides to get a housekeeper, so Alex hires the lovely Karen Nicholson, a totally incompetent young lady whom the family immediately adores but Steven insists she must be fired. Despite the fact that Karen has no domestic skills and is rapidly destroying every appliance in the house, the kids love her and Steven has a difficult time trying to fire her.

Steven takes a nostalgic trip to his hometown following the death of his father and, with the support of Elyse and the children, tries to prepare his mother for her new life in a special two-part episode. Good and bad memories of Steven's childhood (including flashbacks to his boyhood) are stirred up as he sorts thru family photos and heirlooms. But an on-going rivalry with his older brother Robert, and the unsettled feelings he has about his dad make it a difficult period of adjustment for everyone.

Steven gets the promotion he has been waiting years for, but as the new regional manager of the station, he is required to put in long hours at the office, and soon realizes he has no time for his family. Although Elyse and the kids are happy about Steven's new position, they begin to miss the days where he would come home for dinner every nite and have time to take part in day-to-day activities.

Alex secretly invites Ellen's dad to Parent's Day Weekend at Leland College, thinking that she will be pleasantly surprised to see him, but what he doesn't know is that Ellen has no desire to see her father. Ellen can't forgive her father for not spending time with her when she was growing up, and although he wants to make amends she refuses to forgive and forget.

While working as a DJ at the school radio station, Alex strikes up a telephone friendship with caller Lorraine Ferrar, who shares his love of swing music, and he and the attractive 40-year-old meet and develop a special relationship. Drawn to Lorraine's sexy voice and love of swing music, Alex invites her to a Big Band concert. On arriving at her home for the date, he's shocked to find that she's an older woman and the mother of one of his sister's classmates. But they develop a platonic relationship, enjoying each other's company and discovering a wide range of shared interests. When Alex and Lorraine continue to ""date"", Steven and Elyse try to accept it but eventually ask her to stop seeing their son.