Mister Rogers arrives with a record called Laughs. The recording consists of a man laughing which makes Mister Rogers, himself, laugh as he plays it.
Mr. McFeely stops by and informs Mister Rogers that a local television station will be airing a film about sea gulls and Mister Rogers is in the film. After Mister Rogers plays the Laughs record for Mr. McFeely, they set a timer and wait a full minute for the film about seagulls to begin. They watch the film on a television set near the front door.
Visiting Negri's Music Shop, Mister Rogers meets Phyllis Susen who demonstrates different types of harps. Before leaving the shop, Mister Rogers buys a record of harp music.
In the Neighborhood of Make-Believe, Lady Aberlin and King Friday watch as Lady Elaine Fairchilde is interviewed on television. Disinterested in Lady Elaine's comments, King Friday changes the channel and suggests that Lady Aberlin go to the Museum-Go-Round.
At the Museum, Lady Elaine reveals that while she was on Jupiter, she discovered a new planet -- Planet Purple. After the interview, Lady Elaine shares a "photo" of Planet Purple showing that everything there is purple and everyone looks the same.
Back at the house, Mister Rogers talks about how everyone on Planet Purple is the same. He plays his new record of harp music and then a record of accordian music to show that variety is good. He concludes by singing It's You I Like.
For details, notes, and more screenshots from Episode 1237 of Mister Rogers' Neighborhood, visit the Neighborhood Archive.