Crotchety Aunt Pauline comes to the Lane household for her annual visit. Things seem to be going as good as can be expected until Aunt Pauline has a confrontation with Cathy over the way her father has been raising her.
Patty and Cathy have a slumber party at their house for some of their girlfriends. The Richard, Henry, Tom and another boy show up at the door, before the party starts. Little brother Ross tapes the girls' conversations during the party and uses it for blackmail against Patty and Cathy. The two cousins end up doing his chores, to keep Ross from playing the tape to others, and wait on him constantly. Patty and Cathy turn the table on Ross and everything works out fine in the end for the entire Lane family. All info I have submitted is from the credits listed during the...
Through no fault of their own, Cathy accidentally gets the flu shot that was meant for Patty. Cathy's reaction to the shot causes her to miss the dance party later that night, so Patty decides to pull a double shift so Cathy won't lose her boyfriend.
At an audition for a school play, Patty inadvertently steals the part of Cleopatra from Cathy, who becomes her understudy. Meanwhile, Patty arranges for a Hollywood talent scout to view the play, but her plans are jeopardized when she develops laryngitis. Cathy dutifully fills in for Patty, but Patty has other ideas after she makes a last-minute recovery.
In order to win Richard back, Patty, on the advice of her mother, decides to write a poem. After having no luck writing one on her own, Patty finds a poem in a book and gives that one to Richard. Everyone thinks that Patty wrote the poem and it's not a problem until Cathy puts the words to music and Richard decides to enter the song into a TV contest.
After a few horoscope predictions come true, Patty sees this as an opportunity to make a few quick bucks to help buy a birthday present for her mom. As business booms, she enlists Cathy to "double" their profits.
Martin's newspaper reassigns him to the Paris bureau for a year. At first the entire family is enthusiastic about the trip. But the enthusiasm begins to wane when each family member realizes what they are leaving behind.
In order to win a prize for their parents' anniversary, Ross enters Patty into a Beautiful Teens contest. Patty initially declines but later decides to help her brother. But her only chance at winning is with Cathy's help.
Shortly after Cathy receives a present for doing well on a test, Patty begins uncontrollable sneezing whenever she gets near Cathy. The family believes the sneezing is a psychosomatic result of Patty's jealousy of Cathy, while Cathy thinks it's because Patty hates her.