A reporter for the college newspaper always seems to know all about the activities of Dave and Rick's fraternity. The fraternity brothers are convinced that Rick is supplying her with inside information.
The Nelson's friend, little boy Barry, is expecting a new arrival to his family, and he hopes it's going to be a baby brother. He spends a few nights at the Nelson's, while his mother goes to the hospital "to pick up the baby".
The sorority girls issue a proclamation dictating a dress code that must be adhered to by fraternity boys, when going out on dates. The fraternity boys fight back, and the war of the sexes escalates from there.
Harriet asks Ozzie to check for gift ribbon in the hall closet. When a box of wrapping paper falls on the floor, a small unmarked Christmas present is found and the Nelson family tries to figure out who it is from.
Rick and his date get invited to Dave and June's apartment for dinner. After Dave talks to June about it, to make sure it's okay, he finds out that Rick's date is one of his old girlfriends. Someone he's never mentioned to June.
Harriet is keeping seventy books of trading stamps in a kitchen drawer, which the Women's Club has saved and plans to redeem for a fancy gift to give to their retiring president at this evening's banquet. In the meantime, Ozzie, Joe, and Darby find the books and cash them in on sporting goods for themselves.
To make some extra money, Rick agrees to substitute for the vacationing milkman. In addition to the hard-earned cash, Rick discovers the job has a fringe benefit - meeting a beautiful customer first thing every morning.