Hal believes he is old enough to watch his siblings and is put to the test.

Nanny takes some night school courses and falls for that school Professor (Bert Convy)

A 12 year-old genius comes for a visit causing jealousy in Hal

Hal falls madly for Bunny, a swinging chick who comes on to him during a Sadie Hawkins dance. ""You look just like Robert Redford!"" exclaims Bunny. Hal is smitten by Bunny's feminine wiles.

After Bunny imparts that she is fifteen years old, thirteen year old Hal tries to impress her by claiming to be sixteen. Complications ensue the next day, when the assertive Bunny calls Hal and asks him to pick her up for the movies. Flustered Hal blurts out that he will be right over, in spite of the fact that he is too young to drive.

Nanny decides to bail out Hal, and she gives him a ride to pick up Bunny. Bunny is confused, and perhaps suspicious as to why Hal isn't driving, but Nanny explains she is driving because that ""she loves to drive - even in Los Angeles.""

While at the movies, Francine, Hal's thirteen year old next door neighbor sits down in front of Bunny and Hal. Francine, who has a crush on Hal, expresses surprise to see Hal with a high school girl. Bunny reacts icily to Francine

The Professor tries to get out of playing football with his friends.

Hal tries to visit his uncle, but doesn't quite make it.

Nanny trades in her old car ""Arabella"" for a new one

Prudence, being ignored by her brothers, becomes attached to Nanny's old doll.