Robbie and Ernie find that women are full of surprises and not all of them pleasing. Robbie tires of his noisy rock and roll girlfriend and switches to a more dignified girl who has no time for the childish pursuits of her peers, such as football and sock hops. And unfortunately for Robbie Douglas, Lorraine is also serious about getting married and before he knows it, he's engaged! Can even the sagacious Steve Douglas find a graceful way out of this mess?

Chip dates an older woman and Robbie finds his ideas misinterpreted when the Douglas boys face the troubles of growing up. Meanwhile, Robbie tries to come up with a novel idea for the school float, and proceeds to demonstrate that teenage is just a time in life, but his speech, activities and clothes prove that it something much more, a lesson Chip also begins to learn.