Mary can't understand why her brother Jeff is being so polite to her - unless there is some ulterior motive behind his good behavior.

Alex tries over and over to spend a day with Jeff,but his plans are always interrupted by emergency calls.Jeff later shows that he still loves his father by singing the song,""My Dad.""

At an auction a mysterious woman asks Donna to buy a huge Chinese horse statue and gives her the money for it, so Donna does buy it and takes it home. Mary, Jeff and Alex all wonder why?

Mary learns the joys and pains of having a little sister,as she has to baby-sit Trisha on a night when she'd planned to go on a date.

Donna visits a reclusive woman who lives in an old Victorian house.She feels trapped in a haunted house after a while.

Trying to save enough money to build a boat, Jeff and Smitty make a pact to give up dating. Then Jeff finds Mary's friend Joanne hiding under his bed.

After a conversation with a telephone lineman, Jeff decides that it's about time he becomes independent himself. He tests himself by going to a strange town without any money to see whether or not he can make it on his own.

A boyfriend of Mary's calls her wholesome,and she doesn't know weather to take it as a compliment or an insult.

On Jeff's 16th birthday he has a big fight with his girlfriend. Then he falls for an older woman.

Alex and Jeff spend the weekend at the cabin of Alex's friend Red. Donna and Mary follow them and prove that women can, ""rough it"" in the wilderness as well as men can.

The Stones all end up at Shelter Bay during ""mid-term vacation"", better known today as ""Spring Break"". Mary doesn't know the rest of the family is there; she thought it was just her and her girlfriends. Donna, Jeff, and Alex get to stay on a fishing boat named ""Big Daddy"", and boy, does Donna hook a big one!

While Jeff and Joanne are dating as seniors in high school and Mary and Scotty are dating in college, turns out Scotty would rather date Joanne, and Joanne would rather go out with Scotty got it? Then they all go to a college dance and Jeff and Mary wind up being the wallflowers. What can Jeff and Mary do?

A new boy at college has taken a shine to Mary. To Mary's consternation, he follows her everywhere and scares off any other boy who approaches her. Mary decides to find him another girl to protect.

Donna is selected to take part in a survey of housewives to dtermine how long they spend doing their household chores.

Everyone chips in to buy the elderly baby doctor a new car.

A little girl named Trisha follows the Stones home from the park and says that she is one of the family.After a long effort to find her real parents,her uncle arrives.He realizes that the orphaned Trisha loves being in a family and that the Stones are fond of her.He arranges it so Trisha can stay with the Stones.Thus a new family member is added.

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Jeff decides wearing glasses would make him look older, and sets out to prove he needs them.

Mary decides it's time to leave home, and moves into the college dormitory.

If Jeff wants to be able to afford to go to a special event this weekend, he had better collect on the loans he gave his friends. This prompts Donna to suggest that Alex collect from his deadbeat patients.

When Donna decides to run for town council, Jeff and Mary agree to take care of the house. And how! But when Alex dreams about Donna's political future, as Mayor, perhaps Governor, he decides he'd rather have her back home again.

Jeff buys an old bus at an auction and plans to use it as a school bus. However, it breaks down the first day-and no one can fix it. Trisha loves playing like she's driving the bus while wearing a bus-driver's hat. Mary is so worried because she had planned a party that night. Donna decides to decorate the bus-so it became part of the party.

A tale of Joyce and Sabrina in a classic contest, which one will get Jeff to ask her to the big dance? Will it be poor, helpless Joyce or the dominant Sabrina? They both ply Jeff in their own manipulative ways. Poor Jeff can't make up his mind. When he asks his family for advice, all he gets for an answer is ""Why don't you toss a coin?""

Jeff makes a date with Rosemary for the senior prom. Smitty then lets Jeff know that Jeff has been nominated to run for Senior Class President. Now gorgeous Dolores wants Jeff to take her to the prom. What can Jeff do? He's already committed to Rosemary, or is he? Will Jeff actually dump Rosemary for Dolores?

Alex and Jeff go camping in order to spend more time together, but the trip turns out to be a plot cooked up by Jeff to meet his friends.