Ozzie is curious as to how a certain toy submarine works, so he sends in 6 Salty root beer bottle caps plus 50 cents to a cartoon television program, in order to obtain one. As usual, the results are unexpected.
David is taking art and after he brings home a Christmas scene he painted, his parents are impressed. Ozzie and Harriet decide to make it their Christmas card.
The rocking jazz band that Ricky plays drums in gets their first job playing at a sorority dance. Ozzie thinks they would sound much better with a banjo, so he tries to horn in on the act.
Harriet is on the dance committee for a charity event and there is plenty to do. The women decide to involve their husbands and Ozzie finds himself with a major task. He must find a way to inflate 1,000 balloons.
Ozzie makes a deal with Ricky that he will pay half of a car's price so his son plans to get a job. But Ozzie's involvement complicates matters for both Ricky and his friend Pete, leading to a solution that satisfies everyone but Ozzie.
The Nelsons put Doc Williams up at their house for a few days. Ozzie becomes paranoid that the doctor is plotting to remove his tonsils against his will.
Ozzie volunteers for so many Christmas committees that he has little time to do his Christmas shopping, hang the Christmas lights or buy a Christmas tree.
A stranger with a British accent is passing through town, and he looks exactly like Ozzie. It's bad enough that he's been seen about town with an attractive young redhead - he's a wanted pickpocket, too.
Ozzie needs a tuxedo to wear to a banquet but his does not fit. He borrows Doc Williams' tuxedo for the banquet and ends up falling into a cake. Doc Williams needs the tuxedo back for an event the next day.
A series of coincidences start around the Nelson household, starting with David telling his parents that he has just started dating a girl, whose name just happens to be Harriet.
David invites a pretty Spanish girl to a dance knowing she doesn't speak a word of English, but doesn't count on her bringing her duenna as a chaperon.
It's lonely at the top. That's because Harriet converted some upstairs space into a reading room for Ozzie. Now he feels left out of family activities - mainly watching TV.
Ozzie has been treasurer of the men's lodge for the past three years, which is two years too many as far as he is concerned. Now he is balancing the books for the next elected treasurer.
Ozzie worries he and Harriet may be to strict with Dave and Ricky. Ozzie let's them go away for the night without asking where they are going then has second thoughts.
