Mister Rogers shows a box that plays a laughter sound effect. Then he goes to Brockett’s Bakery to see Chef Brockett decorate gingerbread men with different facial expressions. In the Neighborhood of Make-Believe, Lady Aberlin conducts an experiment to see how long it takes the different neighbors to laugh after hearing the sound effect from the laughing box. Eric Kloss visits with Mister Rogers and makes different sounds using a wind synthesizer.
Mister Rogers plays with three different sizes of cardboard tubes. He rolls toy cars and a trolley through the tubes. In the Neighborhood of Make-Believe, Lady Aberlin is keeping track of how the neighbors respond to the laughing box. Handyman Negri learns about Princess Zelda through scrolls listing the names of royalty. Mister Rogers listens to different animal sounds before being joined by Mr. McFeely and Dr. Maggie Kimmel. She tells the story of “Button Broth.”
Mister Rogers shows a toothbrush before revealing a giant toothbrush. Mr. McFeely brings a video showing how people make toothbrushes. In the Neighborhood of Make-Believe, Lady Aberlin observes the neighbors’ reactions after she is able to turn herself into a tiger. Princess Zelda arrives in the Neighborhood of Make-Believe.Mister Rogers dresses up in different costumes.
Mister Rogers has a tube of toothpaste. He brushes his teeth and explains the importance of regular brushing. He goes to see the dentist. He shows people reading and coloring in the waiting room. A dental hygienist shows the chair movements. The dentist, Dr. Jackson, shows his instruments, then examines and polishes Mister Rogers’ teeth. In the next room, a young boy is getting a flouride treatment. A dentist demonstrates the x-ray machine. Back home, Mister Rogers shows an alligator puppet with big teeth and says people must not bite other people. When people feel like biting they should play about their feelings instead. In the Neighborhood of Make-Believe, King Friday and Chuck Aber discuss smiles and beautiful weather. Princes Zelda is looking for someone. Chuck gives her a smile and they sing the smile song. Zelda seeks Lady Aberlin. She and Chuck search together. Chuck makes many mouth noises. Lady Aberlin/Tiger appears and says Queen Sara might know where to find her. Queen Sara and Prince Tuesday are discussing the tiger’s visit to the school. Mister Rogers sings the smile song and says that natural expressions are best.
Mister Rogers plays with a toy earthmover and shows a film of a real earthmover digging a hole. He reads from a book about a newly-hatched bird searching for its mother. Mister Rogers pretends that he is an earthmover. Mr. McFeely arrives with a toothpaste video, which they show. In the Neighborhood of Make-Believe, Robert Troll rides a scooter around Henrietta Pussycat’s house and gives her a ride to work. Mrs. Dingleborder says the tiger was there. Lady Aberlin, in the tiger suit, visits Daniel S. Tiger. She is sorry that she is scaring people, but wants to remain a tiger so she can be related to Daniel. Daniel declares that outward appearances aren’t important. They are related by their hearts. Lady Aberlin sums up her laughing research. Robert Troll arrives with a book about princesses. Princess Zelda finds that her cousin was Cinderella. Mister Rogers talks about the use of mouths: singing, whistling, yawning, saying words, etc., and explains that actions are more important than words.