When Kevin's birthday party is scheduled for the same day as Paul's Bar Mitzvah, Kevin feels put out, but also becomes interested in family traditions.

Paul's sister Debbie needs someone to take her to a cotillion and Kevin is guilted into the task. Meanwhile, Paul, Doug and Randy go to the football game to watch cheerleader Donna Delgado.

The Arnold and Pfeiffer family go on a joint family trip. Kevin meets a wild young girl who smokes! Kevin and Cara have a good time together, so much so that he ditches dinner with his family to see her one last time - expecting to never see her again.

The Pfeiffer and Arnold families have always been friends, but that friendship is threatened when the Pfeiffers come into a lot of money due to a real estate investment that Jack Arnold passed on. When the Arnolds are invited to the Pfeiffers' country club, Jack cannot handle it. Norma saves the day with a toast to the families' continuing friendship

Kevin, Ricky and Chuck plan on sneaking into an R-rated movie, while Paul decides he'd rather stay home and talk marine biology with a family friend's daughter. Kevin, Ricky and Chuck get thrown out of the movie theatre where "Carnal Knowledge" is playing, while Paul is at home losing his virginity. Paul confides in Kevin, but his secret gets out the next day.