Mister Rogers plays with a toy gorilla and then remembers a visit he had with Koko, a real gorilla. A game of hide-and-seek is happening in the Neighborhood of Make-Believe when a gorilla arrives. As the gorilla goes throughout the Neighborhood, everyone is afraid except for Lady Aberlin. As she welcomes the gorilla, Lady Elaine Fairchilde sounds an alarm notifying everyone of the gorilla’s presence. Back at the house, Mr. McFeely brings over a film about how toy balls are made.