On Halloween night, Ozzie and Thorny make plans to attend a non-costume party as Satan and a Scotsman. Meanwhile Ricky and David attend a Halloween Party at school and the Nelson household is besieged by children demanding candy - or else.
It's Christmas Day at the Nelson's, a joyous occasion marked by one glitch - the catcher's mitt Ozzie ordered for Rick never arrived. That evening, Ozzie and Rick drive to another family named Nelson thinking that the package might have been delivered by mistake. The package isn't there, either, but Ozzie and his son are struck by how the family, a single mom and three young children, and received so little at Christmas compared to their own relative prosperity. Ozzie organizes the neighbors, and with David playing Santa Claus, treat the other Nelson family to a ...
While discussing The Rover Boys' books with Thorny, Ozzie takes off to check out a book at the library, hoping to prove Thorny wrong. But when he's caught with a big book, one of his boys' teachers is convinced he knows a lot about the Peloponnesian War and asks him to lead a book discussion. Thorny is just to proud to admit the truth and decides to learn everything he can before the PTA meeting.
Fearing that Ozzie is coming down with a cold, Harriet orders her husband to spend the evening convalescing and then goes shopping with a friend. Ozzie manages a rapid recovery when Thorny reminds him of a date they made to go bowling.
It's spring, and love is in the air, so Ozzie wants to surprise Harriet by having a bunch of violets delivered to her. When orchids show up, instead, Ozzie suspects they're from an old rich boy friend of Harriet's.