David and two of his college friends decide to steal a rival school's mascot before the game next weekend. Mark and Willie decide to put Sandy's details into a computer-dating organisation after she had a bad dating experience.
Michael has been selected to redo his driver's licence test. He fails the test and has to redo the examination. David plays a practical joke on Mark and Willie and they get back at him by convincing him that his hair is falling out.
David has to forgo a camping holiday because he has to finish a paper by Monday but spends most of the time avoiding it. Mark is nervous about his first date and apprehensive about how it'll go. It goes badly and from disaster to disaster.
Sandy and Michael visit their elderly aunt Mildred to convince her to move down to Florida to be with her daughter. The boys are cleaning the chimney when Dave manages to get Mark stuck in it. The fire brigade is called to get him out.
Mark is in love with a girl at school, but how to meet her? Michael suggests that he have a party and invite her. When she said that she liked to dance, Willie says Mark is a terrific dancer, which causes him a problem as he can't dance.
When Willie is caught smoking at school, Sandy convinces him that he shouldn't start. She smoked in college and pointed out that it is an addiction very hard to break. However, she takes up smoking again to help her cope for an exam.
David tries to conduct a psychological experiment on Mark to see the effects of sleep deprivation. Sandy stops it but David convinces Sandy to be the subject instead. The results show that she is no longer the 'queen of the all-nighter'.
Mrs. Poole volunteers to fill in for Sandy's secretary. Mark and Willie are in trouble and Michael thinks it is caused by boy they are keeping company with. Michael and Sandy meet the boy's mother, who is initially disinterested.
It's Martin Luther King Day and one of Sandy's former teachers comes to the Hogan home for dinner. He is from South Africa and talks about apartheid, which shocks his listeners. Will wants to go to a candle light vigil against apartheid.
Mark and Willie are on a school trip when they are astounded to see a nude painting of Sandy in a gallery. The picture was painted by an old college friend of Sandy's and it turns out that the artist put her head on somebody else's body.
David has a run in with a pretty girl he didn't know, and he then goes on a blind date with her. The date doesn't go well but he then asks her out. Richard, Sandy's ex, is in town for his aunt's funeral and he is taking it very casually.
The relationship between Sara and David has been going very well but then Sara is offered a position at an Australian marine science centre. To stay together, David proposes to her. Sara realises that they aren't ready for marriage.
David, Burt and Rich head to Las Vegas for a boxing match but are distracted by the pokies. Burt hits the jackpot with his first coin and they go on a spending spree with the winnings unaware of exactly how much they're spending.
Dave has been reading his psychology texts and decides that he needs to go back to being the boys' older brother again. Michael wants Sandy to go on a blind date and she agrees, as long as he goes on one too, at the same time.
When Michael chastises David for not coming home one night, David decides that he would be better off living with Burt and Rich. However, when they all get together David finds that the grass is not greener on the other side.
Michael starts wearing reading glasses, which makes him feel old. Sandy then decides to throw Michael a surprise 40th birthday party with the help of the boys, and he doesn't cope well with all the 'getting old' jokes at the party.
David is threatened by a very competitive hockey player. In their next game David seriously injures him. Willie owes Mark some money for damaging his computer but annoys him when he buys a signed baseball instead.
Willie wants Mark to tutor his new girlfriend as she will be sent to a private school if her grades don't improve. Mark is reluctant to but does so, too successfully. David becomes sick, and everybody suffers as he is a hypochondriac.
Sandy's friend from Italy is coming to America to teach Italian at the boy's school with Sandy. The boys are initially reluctant, until they see how beautiful she is. David, in particular, is very smitten and he can't do enough for her.