Ward is thrown off guard after Bill Boothby suggests Wally and his daughter may be getting married soon. Meanwhile, Wally gets a different picture of married life through Evelyn's sister and her husband.

Beaver's bragged to all his friends that his parents think he's too old for a babysitter. When they go out for an evening, Beaver has to figure out a way to hide Judy, the babysitter beaver's parents changed their minds about.

When Wally buys his first car for a mere $25, he brings it home only to have it become a roadblock preventing Ward from getting his car out of the garage.

Having decided he's too old for birthday parties and presents, Beaver collects birthday money from family members. But instead of saving it, he decides to spend it..

Beaver finds himswelf with a problem after he feeds Mrs. Prentiss's lost cat, Bootsie, and soon realizes that Bootsie will continue to return to the Cleaver's home for more.

Jealous of Wally's new job at the soda fountain, Eddie and Lumpy decide to play a prank on Wally by ordering a delivery of six quarts of ice cream to Mary Ellen Roger's slumber party.

Wally finds himself with his first driving ticket thanks to Beaver and Gilbert's clumsiness.

Wally's school is having an exchange dance and Wally and Eddie must take girls from a rival school that they chose out of a hat. Eddie asks to trade with Wally and he agrees, like a shot, after seeing the picture of Eddie's intended in a yearbook. Suspicious, Wally soon quickly discovers why Eddie wanted to trade; the girl is a few inches taller than Wally.

Beaver wants a new pair of expensive ice skates and asks Ward to borrow $13.00. Wanting to pick them out himself, he goes to the store and is conned by a salesman who sells him skates that her 3 sizes too big.

Wally and a bunch of other guys are invited to spend the weekend at Scott's cottage on the lake. However, the one thing that could keep Wally from going, Scott just happens to forget to mention, that there will be no parent supervision.

Beaver has been having trouble in English and Ward persuades Wally to tutor him. Wally has Beaver look over an old exam that he once took and to Beaver's surprise, the next day, his teacher gives him the exact same test, which he of course he aces. However, Beaver is left with a guilty conscience.

Wally plans on going to a big dance with Evelyn Boothby and they plan on getting there cramped with six other people in Lumpy's car. When June and Ward refuse to allow that, Wally and Evelyn must find another way to get there. However, what Evelyn has in mind doesn't go over well with Wally.

A party is being thrown at the dancing school where Beaver and Wally once took lessons and they're both invited. This prompts Beaver to ask one particular girl who caught his eye, Betsy Patterson, if he could escort her to the dance. However, once at the dance, he finds that Betsy has promised other boys that she would dance with them.

During a particularly awful golf game, Ward happens to break his driver and decides it's not worth repairing it, so he just puts it in the closet. Later, Gilbert talks Beaver into hitting around some golf balls with Ward's clubs and one hit with the broken driver has Beaver thinking he broke it.

Penny learns that she will be moving away and Beaver deals with mixed feelings for the girl with whom he shares a mutual dislike for. However, after a farewell party at school, Beaver and Penny openly show their true feelings for one another.

Beaver is cast as a rabbit for a school play and June has his costume all ready, complete with floppy ears and puffy tail. On the night of the play, Beaver needs to be at the school early and gets a ride with Lumpy and Wally in full costume, however, Lumpy's car breaks down and Beaver must walk the few blocks to the school to get there in time.

June runs across Beaver's old electric trains while cleaning and since he hasn't played with them in years, finds someone who will take them, with Beaver's consent. However, Beaver quickly re-discovers the fun he has with his old trains and wants to withdraw from the arrangement, even though, the new owners-to-be are expecting them.

Beaver has Gilbert over to spend the night but after they watch a gangster movie things get out of hand. A suspicious car has just pulled up to the front of the house with two strange characters sitting inside, and they just happen to be Lumpy and Bill, dressed for a masquerade party. Not knowing this, Beaver calls the police and Lumpy and Bill are arrested.

Richard has just gotten, as Beaver describes it, a ""keen"" new jacket and this prompts Beaver to ask his parents for one exactly like it. June and Ward are hesitant after learning the price of one but decide to give in. However, when Richard loses his, he coerces Beaver into a plot to trick his parents.

Beaver becomes convinced that he's ugly and unwanted after constantly being reminded how cute he used to be and from being yelled at from his parents at how messy he currently is.

Wally is rounding up some guys to go to an amusement park and he's one short from getting a discount so he settles on Beaver. However, Beaver begins having second thoughts when he hears stories about one of the rollercoasters.

Beaver, Gilbert and Richard find a burro for sale in Mayfield and they each decide to each go in $10 for it. After getting their parent's permission, Richard and Gilbert fight over who gets to keep the burro, which they name Pepe. However, once they get a load of just how destructive a burro can be, they dump the problem of room and board on Beaver.

Eddie pompously announces that he's dropping out of school to get a high paying job at a gas station. However, all is not as it seems when Wally and Lumpy get a glance at Eddie's new free spending life.

A communication gap ensues when Wally wants to spend the night at Lumpy's and Beaver wants to have Gilbert spend the night. Beaver asks June and she tells him, he can sometime when Wally spends the night somewhere and Wally asks Ward, who tells him he can sometime when Beaver has someone spend the night.

Beaver agrees to help Richard cart his family's clothes down to the laundromat, however, half way there they discover that Richard has lost the three dollars his mother gave him. This leads him to ask Beaver if he could use the Cleaver washer. They soon find themselves in another jam when the washing machine overflows after Beaver put in too much soap and starch.

Ward allows his car to be driven by Lumpy who must get Eddie, Wally and Beaver to a sporting event in a neighboring town. However, on the way back, Lumpy disobeys Ward's orders and takes a shortcut home.

When Wally has a previous engagement and is unable to babysit, Beaver fills in and quickly finds himself the object of a 10-year old's affection.

Beaver decides to join the basketball team but finds himself trying to live up to Wally's performance. However, after not making the team, Beaver allows his family to believe that he did.

Seeing an ad for typewriters on sale, Beaver talks his parents into letting him get one as long as he learns how to use it. However, Beaver discovers learning to type is not as easy as it looks and soon finds himself making a deal with the shady Eddie Haskell.

Ward comes down hard on Wally after he comes home two hours late, this fuels June and Ward's suspicions that Wally is contemplating joing the merchant Marines. June had discovered some pamphlets hidden in his dresser drawer. However, little does anyone know, Wally has been getting the information for Lumpy who's seriously thinking of joining.

Beaver gets a new girl in his class and is instantly smitten. He begins walking her home from school but he soon realizes that the girl has an agenda on her mind. Her sole purpose is to get close to Beaver in order to get close to Wally. This leads Beaver to accuse Wally of stealing his girl.

Ward doesn't take any excuses when he puts his foot down and demands that Wally and Beaver clean the yard. They each reluctantly cancel their plans with Richard and Eddie and get to work but soon find themselves with distractions. This causes them to miss the deadline to call the hauler who is suppose to take all the yard waste away and this leads them to pay Eddie and Lumpy to take care of it.

Wally finds himself smack dab in the middle of a lover's quarrel when a woman tries to make her estranged boyfriend jealous by continually making tennis dates with Wally. Wally finds himself in an awkward position when the boyfriend threatens him.

Wally and Eddie are finally invited to join the barons, the high school's most exclusive club.

Beaver, Richard, Whitey and Alan each buy sweatshirts that have monster faces on the front of them. They like them so much they each decide to wear them to school the next day. However, each one finds that their parents forbid them from wearing such hideous sweatshirts to school. However, Beaver manages to sneak out of the house with his on.

Beaver and his friends are all psyched to go on a camping trip with Gilbert's father as an escort. However, when Gilbert's father suddenly has to work and everyone is down in the dumps that is until Wally agrees to take them. Meanwhile, Eddie and Lumpy decide to secretly tag along and scare the boys with animal noises.

Beaver and his friends decide to make a call to California to talk to Don Drysdale and they agree to chip in on the cost of the call, assuming that it's only going to be a couple dollars. However, when they're put on hold, the cost quickly jumps up to $9.00.

Beaver and Wally become interested in the stock market and Ward decides that they should try their hand at it. However, Wally and Beaver have different ideas about what to invest in compared to Ward who wants them to play it safe and invest in Mayfield Power and Electric, while they want to invest in a more risky venture.

The Cleavers are all excited about their annual summer vacation up to the cabin, that is except Wally. Wanting to be close to his latest girl, Wally wants to stay behind and gets permission to stay at Eddie's house during the two weeks the Cleavers are on vacation, but June and Ward are a bit unsure of Wally's plans.