Will child psychology theories prove themselves in practice? Alex is going to find out, with Mary and Jeff as his subjects.

The Stones rent a motor home for a trip to Lake Mead.

While spending the weekend with friends who have left the rat-race of the city life and who now live on a farm, Donna and Alex become tempted by the country life.

Donna is offered a free trip when she complains to an airline.

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?"

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."

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

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.

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

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.