Mister Rogers talks about three-cornered hats and sings “My Hat it Has Three Corners.” Mr. McFeely asks Mister Rogers to come along for a bus ride. They look out the bus window at different hats people are wearing. Back home, Mr. McFeely and Mister Rogers exchange hats and sing the Speedy Delivery song. In the Neighborhood of Make-Believe, Mayor Maggie and Queen Sara try on three-cornered hats. King Friday does not immediately recognize the queen with her new hat on. Mayor Maggie gives King Friday a hat as well and he commands that everyone must wear a three-cornered “one.” Robert Troll has a box to deliver to Lady Elaine and meets Chuck Aber who is delivering three-cornered hats. Chuck and Robert give Henrietta and X hats “just for fun and fancy.” Lady Elaine’s delivery turns out to be an onion-shaped hat that is round and very different from everyone else’s three-cornered hats. She refuses to be like everyone else and chooses to wear her new hat because she likes it. King Friday has Robert Troll even put a three-cornered hat on Trolley. Robert puts off answering the king’s queries about what was in the box for Lady Elaine. Mister Rogers makes a hat out of construction paper, clothes pins, and paper plates. He sings “It’s You I Like” and says it’s not the things you wear that make you “you,” but it’s the person inside that counts the most.
Mister Rogers talks about costumes and puts on Bob Trow’s dog costume. Marilyn Barnett stops by to show some exercises that need two people. Mister Rogers explains and demonstrates what “spotting” means in gymnastics. Bob Trow stops by to pick up the dog suit and participates in the exercises. They agree that the most important thing is the person inside the costume. Mister Rogers says that it is good to talk about important issues with other people. He sings “It’s the Style to Wear a Smile.” Mr. McFeely brings a video called “How People Make Blue Jeans” and shows off his new jeans. He and Mister Rogers agree that no matter what you wear, it’s the inside of you that matters most. In the Neighborhood of Make-Believe, Handyman Negri is exercising with the birds outside the castle. King Friday tells Negri to give the birds and Bob Dog their three-cornered hats. Bob Dog tries on several different hats until he gets one that fits. King Friday restates his rule that everyone must wear a three-cornered hat. Bob Dog talks to Chuck Aber and learns that Lady Elaine is spending alot of time in her “will not” room. Daniel shows Bob Dog the hat that he made for his imaginary friend Malcolm Apricot Dinko. James Michael Jones, Chuck Aber, and Bob Dog discuss why Lady Elaine will not wear a three-cornered hat. She states that she will wear what she wants. Chuck tells Edgar Cooke to give King Friday the message that Negri is still at work inspecting the neighborhood.
Mister Rogers shows examples of different types of shoes and matches the left shoe with the right one to make a pair. He shows a picture of Alan Morrison who plays the pipe organ and also shows the type of shoes that Alan wears while working. He visits Alan who plays several songs on the organ that evoke different emotions. He also takes us on a tour to see how the organ pipes line the walls around the church. Alan then plays the piano for Mister Rogers and invites him to a dress rehearsal. In the Neighborhood of Make-Believe, Queen Sara and King Friday talk to Mayor Maggie who is wearing a rain coat. King Friday repeats his rule that everyone must wear a three-cornered hat. Chuck Aber and Maggie discuss how the rule is silly. Chuck tells Henrietta and X that Lady Elaine is spraying with her hose anyone who mentions a three-cornered hat. Chuck explains the situation to Betty Templeton Jones who says she will try to help the silly situation of squirts and diplomatic impasse. Mister Rogers picks up the shoes he was showing earlier and wonders if King Friiday and Lady Elaine are just jealous of each other. He suggests that they should talk instead of acting silly, and says that we don’t have to act like they do.
Mister Rogers talks about the time he fell down the stairs and hurt his ankle. He shows what his leg looked like in a cast and demonstrates how he walked with crutches. He sings “Peace and Quiet.” Chef Brockett stops by to show us his crutches and how he has learned to use them. He gives Mister Rogers a painting of a cupcake that he made while he was in the hospital. In the Neighborhood of Make-Believe, Betty Templeton Jones talks with King Friday about his “three-cornered one” rule. Robert Troll and Betty try to persuade Lady Elaine to wear a hat. Lady Elaine shows them a three-cornered scarf that Chef Brockett made for her. Mister Rogers visits Alan Morrison who introduces his friends, Demarre and Anthony McGill, who play the flute and the clarinet. They explain that they are wearing formal clothes for a formal concert. All three musicians play a song together. Mister Rogers says they spend their time doing constructive things that do not hurt anyone, and how proud he is of them. He sings “I’m Proud of You.” Mr. McFeely brings a video called “How People Make Paper Bags.”
Mister Rogers demonstrates how a small, hand-held sewing machine works. He says machines are not toys and you need to be very careful. He comments that people invent machines and can think of wonderful things and then do them. He visits the Colonial Williamsburg Millinery shop where Jennay Whitaker shows him some clothing from the past, all made by hand. She says many were fastened with pins or buttons. Mister Rogers tries on several items of old clothing, including a couple of wigs and a three-cornered hat. In the Neighborhood of Make-Believe, Handyman Negri and Miss Paulificate talk with King Friday about his rule that everyone must wear a “three-cornered one.” Betty Templeton Jones asks Handyman Negri to play the song “My Hat it Has Three Corners” but to change the words to “My Scarf it Has Three Corners” in order to include Lady Elaine. Lady Elaine puts on a wig to be a “big wig.” Lady Elaine, Mayor Maggie, Betty, and Handyman go to talk with King Friday. Because her scarf has three corners, he compromises and lifts the rule. Mister Rogers says that both Lady Elaine and King Friday were competing to be the most important, and says that it is not much fun to be with people who fight to be the most important. He says everybody has something special inside them and nobody is more important than anybody else. He sings “You Are Special,” and reads the book “Hats, Hats, Hats” which describes the great diversity of hats there are in this world.