The furnace is on the blink, causing a cold front in the Bradford house, but Tom dismisses Mary's offer to fix it; Susan's chance for an internship conflicts with Merle's offer to play winter ball in Puerto Rico; Nicholas goes on strike for a raise in his allowance.

Tom and Abby agree to let Tommy and a few friends have the house for a small party after graduation. Nicholas and Irving are working on a school project when Irving gets hurt and Tommy ends up spending grad night at the hospital. The party goes on without them as party crashers show up. Officers were called in to finally break up the party and Tom demands an explanation, thinking Tommy was being ignorant.

With Abby's encouragement, Tom takes a leave of absence to pursue the dream of writing a book about his family. He can't get it published the norman way, but has a special issue done for each member of the family. David goes on a double date with Nancy and they come home with different stories of the same night.

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.

Tom throws a party to celebrates paying off the mortage on the Bradford house. Unfortunately, the kids get into a melee when Susan punches a heckler at David and Tommy's singing appreance and Tom has to remortage the house to pay the damages as seven of his children were arrested after a fight in the nightclub. David waits for the results of his contractor's exam. Nicholas felt left out since he was never arrested.

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.

Joannie tries to convince her boss that she is ready for more responsibility at work. Joannie wants to do a documentary on her family. Mary learns that being an adult can be painful when she falls for a resident at the hospital who is unavailable. Eager to earn extra money, Nicholas sells guaca dew, a wrinkle remover, door to door.

Tommy is upset when Jill's idea of a commitment is not the same as his and then misinterprets signals from Mary's friend, Kerry, and gets deeper into trouble. Tommy presents Jill with a class ring. Abby and the girls plan a surprise baby shower for Susan. Nicholas plays go-between for Marvin but ends up with the girl instead.

This episode introduces Betty Buckley in the contract role of Sue "" Abby"" Abbott. At first she was a special guest star. Tommy breaks his ankles at a touch football game and will miss school for five weeks. Mary moves in with her boyfriend, a young psychiatry students [Doug] . Sandra Sue Abbott is sent to tutor Tommy while he is absent from school.

After much debate, Tom and Abby decides on November 9th as their wedding date and agree to let the children handle the wedding plans, but it almost does not happen when things get too crazy. Elizabeth and Nicholas are not as excited about the wedding plans as the rest of the Bradford children.

The children get carried away with the weddind plans and nearly cause the wedding to be canceled. Abby asks Elizabeth to be her maid of honor and develop a special relationship.

Joannie, Nancy, and Susan meet new guys at a disco over winter break and love times three drives the Bradford household crazy. David's friend tries to convince him to go on a blind date, so he fixes David with one, but the ""date"" turns out to be totally unexepectely...his sister Mary. Tommy desperatiely tries to win rock concert tickets.

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.

Chaos hits the Bradford house when everyone's activities go around the clock. In order to get her Ph.D. more quickly, Abby attends school full-time and has little time for the family. Tom is upset when no one is home when Nicholas gets home from school. Tired of getting dead-end jobs because of her looks, Nancy gets a job at a brokerage firm. All this drives Tom bananas and he finally calls a family meeting at 3 a.m. by playing loud music to rearrange the goings on.

Things are not as they seem at the Bradfords when Merle's sister, Linda Mae, comes from the farm and visits the Bradfords and is shocked at what she finds. Joannie talks Nancy into playing a stripper in her play. Susan panics when she hears that Merle was injured in a game. It's a comedy of errors when Linda Mae calls the police after misunderstanding the family's crazy life style.

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.

Tom is upset that everyone is neglecting their household duties so Abby and the kids pool their resources to hire a maid. Tommy tries to help his friend Ernie, who won't admit he has an alcoholic problem. They split-up over this and Bradford steps in to help. Nicholas and Marvin try to get into the Book of World Records.

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

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.

After Tom and Abby break up, the Bradford children set Tom up with another woman in an effort to make Abby jealous. Nancy enters the Miss Scaramento beauty contest. David and Tommy hang aroung a laundromat in hopes of meeting girls.

Abby is upset about when David gives Nicholas a BB gun. Tom's column about garbage causes a controverty when he writes a tongue-in-cheek column. That's when his troubles start to pile up, along with his garbage. Tom is prepared to go to jail rather than reveal his source for his column.

Joannie directs a talent show to raise money, for the orphanage she is vo;unteering at . Joannie tries to get the whole family to enterain. Nicholas believes ha has seen a UFO, but nobody else believe him. It turns out to be only a practical joke by one of the neighborhood kids. ""Abby"" sing a song she wrote herself. ""SO-LA"". music by Jim Hurt, Ira Newborn and Betty Buckley aho also wrote the lyrics. ""David"" sings a song he wrote hisself. ""Eight is Enough"". lyrics by Molly-Ann Leikin, music by Lee Holdridge. This song replaced the original theme song from the next season on.

When Tommy is rushed to the hospital for emergency surgery, Mary and Nicholas both feel culpable for different reasons; Merle and Susan adjust to the give and take of married life; Nancy plays travel guide for a visiting colleague from China who doesn't speak English.

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