Togetherness can be really funny when the whole Bradford household is quarantined, including Nancy's blind date,after Mary's boyfriend comes down with a mysterious ailment. David has to run errands for his quaranteened family. Nicolas hides some toys he brought into the house without buying them. Cabin fever eventually drives the family crazy.

Tony's sister shows up for a visit and turns the Bradford house upside-down when the encourages the kids to pursue their dreams and goals. David gets laid off and Vivian gets him a job as an architect. Mary gets ""C' in Introductory Philosophy. Joanie considers traveling in an acting company if she gets accepted by the director.

Dr. Max shows up on Tom's doorstep after a fight with his wife and ends up staying with the Bradfords, driving them crazy with his fussy ways. David tries to borrow money from his brothers and sisters to cover a bad check he wrote at poker game to cover a debt.

Mary runs for a seat of the Board of Education and enlists the famil's help on her campaign. Abby is too busy to keep her dates with Tom. Tom proposes to Abby after she and Mary are able to work out their difficulties over Mary's running for the school board. Abby accepts Tom's proposal.

The Bradfords celebrate their first Christmas without their late mother,Joan. Nicholas mistakenly assumes the man he finds in the house on Christmas Eve is Santa Claus and lets him steal the Christmas presents, putting Christmas temporaily on hold.

The kids convince Tom to shoiw some Christmas spirit by bailing Sam out of jail and inviting him to the house for Christmas dinner as they celebrate the true meaning of Christmas. Tommy receives a special Christmas present from his mom.

Abby convinces Tom to spend the weekend with her parents in Pasadena, leaving the kids alone for the weekend. While they are away, despite a rule against having any non-Bradfords in the house, the kids throw a party, but then the house is overrun with chaos and the kids barely manage to get things back in order before Tom and Abby return. A distant cousins shows up on the Bradford doorstep for the flower children.

Suffering from imsommia and thinking he's going nuts.Tom visits a psychiatrist to find the cause. Tommy develops two personalities, ""disco kid"" and ""mellow man"", to impress the two girls he is dating. Tom's sneaking around leads Abby to believe that he may be having an affair.

The male Bradfords refuse to attend a speech that Abby was selected to give. War erupts between the Bradfords men and woman when the woman feel they are not respected by the men. Nancy gets a job pumping gas in a sexy uniform in a local filling station.

The Bradford children plan a party for Tom and Abby's anniversary and Nicholas fell left out. Tom and Abby unknowingly bid against each other for ""A Christmas Line"" tickets for their anniversary. Nicholas accidents set fire to his room, destroying the anniversary present Tommy was making for Tomand Abby. Feeling like the family doesn't want him around anymore, Nicholas runs away to find Sam in San Diego.

In San Diego, Nicholas is taken in by Joe Simmons, an old con man and bum who was a friend of Sam's. He then performs his best scam trying to get Nicholas back to the Bradfords. Believing that Nicholas is at a friend's house, the Bradford's work on repairing Tommy and Nicholas room.

David and his traveling companion continue on their cross-country trip and he gets involved in a hang-gliding competition and learn a few lessons about life.

David and Janet set a wedding date but it turns out to be the same day Merle and Susan decided to move up the wedding day to accomodate Merle's ballplaying career move. Nancy gets a job delivering singing telegrams and is hired to deliver one at the double wedding for David and Janet and Merle and Susan.

Tom's sister Vivian sweeps into town with an offer to take the entire family on vacation to Hawaii, where she secretly plans to reunite Tom with their estranged father.

Still in Hawaii, Tom and his father contemplate whether they can or should bother to reconcile their relationship.

Tom and Abby believe that Susan is depressed because Merle is gone but learn that she is pregnant. The girls try to cheer her up. Joannie meets a psychic and holds a seance to help Susan. Merle arrives to win her back and finds out she is going to have their baby. Ernie and Tommy use Nicholas as bait to meet girls.

Tom talks David into hiring Tommy as a construction worker but Tommy has to prove himself to his fellow workers by standing up to them on his own. Nicholas needs to write a speech about Tom and follows him around for a day at the office to get material. Elizabeth is looking for advice on how to meet men in college.

Nicholas and Tom start boy scouts and Nicholas volunteers Tom to be the assistant scout master. Elizabeth considers moving in with her boyfriend. Susan keeps her pregnancy problems from Merle when his career takes a leap forward.

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Susan brings the baby, Sandra Sue, home from the hospital. When Joan's parents visit the Bradford household to see the family and their great-grandchild, a conflict with Abby occurs as Joan's parents disapprove of the way Abby is raising Nicholas. Grandpa and Abby make up and finally accept Joan's death in a touching story. Tommy gets a job playing the guitar at a male strip joint

Nicholas and his friend, Melvin, start a messenger service to earn money and get more than they bargained for. One of their first deliveries turns out to be an airline bag full of money to be used for political bribes. David is frustrated when another construction company keeps underbidding him. Abby and Donna plan a surprise party for Tom.

Tom is nominated for a political post by the governor. A political appointment for him ends up more than he can live with. Joannie goes undercover to do a story on a video dating service. Nicholas tries to get rid of his ""cute"" image.

Joannie is tired of not getting any serious assignments at work and Abby encourages her to take a leave of absence to evaluate her career, and falls for a co-worker. Nancy finds out fame has a price when she becomes the ""Sunshine Soda Girl."" Tommy needs a ticket to a rock concert and Nicholas has one to sell.

Jeremy is suspicious when he finds a skull while digging in the garden. David and Janet consider getting back together. Nicholas assumes he's a shoo-in for the basketball team when Elizabeth dates the coach.