Trama

Beaver's crush on his teacher Miss Canfield and teasing by the other kids leads him to put a spring snake in her desk drawer. When his conscience starts acting up, he does his best to make sure the snake stays in the desk.

Beaver has developed his first crush on a girl: Miss Canfield, his home room teacher. He has even been staying after school for the past two weeks to help her with whatever classroom chores. But the other kids notice his behavior and tease him about being the teacher's pet. To stop the kidding and prove he isn't, he takes them up on a dare: to place a springing toy snake in her desk drawer. But after he's done it, he wishes he hadn't and does whatever he can to get the snake from out of her desk drawer with Wally's help. Some of their ideas include breaking into the school in the middle of the night, or trying to get it out when Miss Canfield isn't in the room all the while preventing her from opening the desk drawer. But through it all, Beaver feels worst of all for doing anything to hurt or scare Miss Canfield, or to make her think badly of him.—Huggo

Beaver Cleaver (Jerry Mathers) gets a late start to school after pausing to ask Mom, June Cleaver (Barbara Billingsley,) when he'll be grown up enough to get married. June suspects that the Beaver may have a crush on a little girl in his second grade class. Ward Cleaver (Hugh Beaumont) reminiscences about his own eighth grade crush on a blonde with braces and a page-boy haircut. As it turns out, the Beaver does have a crush - on his teacher, Miss Canfield (Diane Brewster.)

After school, Beaver cleans the chalkboard for Miss Canfield. Judy Hensler (Jeri Weil) dares him to put a spring-loaded joke snake into Miss Canfield's desk drawer to prove that he isn't Teacher's Pet. Beaver refuses, but when the other kids taunt him, and call him chicken, he reluctantly puts the snake into Miss Canfield's top desk drawer. Before he is able to retrieve the snake, Miss Canfield returns to the classroom and tells him to run along home.

A distracted Beaver and uncommunicative Wally (Tony Dow) gets Ward's dander up during dinner. He tells the boys that he is genuinely interested in hearing about their day, and doesn't understand why the boys won't tell him anything. The boys are excused from dinner, and June worries that something might be wrong with the Beaver.

Upstairs, Beaver confesses to Wally that he put a snake into Miss Canfield's desk drawer and is now consumed with regret. Wally agrees to help Beaver. They sneak out of their room and go to the school.

Mr. Johnson (William Fawcett,) the school night watchman, is locking up the school where he runs into principal Mrs. Rayburn (Doris Packer.) He tells her that he's brought his dog, Alfred, to work with him that night. He wishes Mrs. Rayburn a good evening. Wally and Beaver sneak into the school. A growling and barking Alfred spots them. Shaken, the two boys head home.

June discovers the boys are gone. She runs downstairs to get Ward, telling him that the boys have run away. She and Ward go back upstairs, only to find Wally and the Beaver asleep in their beds. Ward and June quietly leave the room. In the hallway, Ward says he doesn't doubt that the boys snuck out, and tells June about how he used to sneak out of his room at night to hunt for night crawlers when he was a boy. He assures June that he will speak to the boys "at the right time."

The Beaver spends the next day trying to keep Miss Canfield from opening her desk drawer. At lunchtime, he sneaks into the classroom to get the snake, but Mrs. Rayburn walks in, looking for a report. She thinks the Beaver looks a little green and takes him to see the nurse. Later in the day, Whitey (Stanley Fafara) asks to borrow a ruler from Miss Canfield, but before she can open her drawer, Beaver pulls Judy's hair. The bell rings and everyone but the Beaver is dismissed for the day. The Beaver stays after school where he must write, "I will not pull Judy Hensler's hair" on the chalkboard one hundred times. When Miss Canfield steps out of the room, Beaver opens her desk drawer to retrieve the snake, but can't find it. Miss Canfield appears, and tells the Beaver that the snake isn't in there anymore. Beaver admits to putting it in her desk and tells Miss Canfield that he did it because the other kids called him Teacher's Pet. He apologizes, and confesses that he likes her, and that he asked his mother when he could marry her. Miss Canfield explains that it isn't right for her to show favoritism to any one student, and explains that she can't marry him, but that he'll likely find a girl his own age someday.

Later that night, the Beaver asks Wally if he ever liked an older girl the way he likes Miss Canfield. Wally confesses that he liked Miss Hildebrand at the lake, even though she married a man who smoked a pipe. Beaver asks if he ever got over her. Wally admits that he never has. Beaver tells Wally that he'll never get over Miss Canfield either.