Wally's class is having a dance. Wally is going, but like most of the other boys in the class, he isn't going to ask a girl to go with him. Instead, he plans on hanging out with Eddie Haskell and some of the other boys. On the other hand, the girls in the class lament that none of the boys are asking any of them to go. Mary Ellen Rogers believes she's figured out a way for Wally to take her to the dance. Her plan includes using the Beaver without his knowledge and befriending him with the use of her father's electric train set. As Mary Ellen progresses with her plan, it becomes the battle of the sexes, even in the Cleaver household, with June understanding why Mary Ellen would need to resort to such underhanded measures. In the end, Beaver may be the one who gets hurt.
—Huggo