Mister Rogers plays with blocks and a toy car. He talks about having wanted to grow up and drive a real car like his daddy. Marilyn Barnett puts Mister Rogers and Mr. McFeely through a workout. Mister Rogers talks about growing on the inside. In the Neighborhood of Make-Believe, Chuck Aber is exercising with Prince Tuesday, who wants to be big. Aber says it’s okay being a child too. He sings “You Can Do It”. Miss Paulificate arrives with a phone call from Mayor Maggie. There is something big in Westwood. Mr. McFeely arrives singing. Tuesday voices his lament over being small. Queen Sara has seen something big in Westwood and it’s rolling towards the castle. Mister Rogers wonders what the big thing is. He talks about patience and explains that only living things grow. Mr. McFeely arrives with a video of how people make model cars. Mister Rogers puts away his blocks, feeds the fish, and remembers the first time, as a child, that he was allowed to feed the fish.
Mister Rogers plants a seed and then visits a conservatory with Mr. McFeely. Maggie Stewart is there, too. In the Neighborhood of Make-Believe, King Friday orders Handyman Negri to sing a song about not being afraid. This makes the neighbors even more anxious about the “big thing” that is to arrive in the neighborhood.
Mister Rogers brings in a cat named Jimmy and remembers him as a kitten. Mr. McFeely brings by some flowers in a pot. The “big thing” arrives in the Neighborhood of Make-Believe. The neighbors attempt to communicate with it. Mister Rogers plays a memory game and then shows pictures of babies that have grown into adults.He receives a visit from Eva and Una Kwong.
Mister Rogers says that the bean plant he planted a few days ago has grown. He plays a memory game using plastic vegetables before going to get a haircut. In the Neighborhood of Make-Believe, Robert Troll is the only one who can communicate with the “big thing.” He learns that it wants a blanket; the blanket causes it to sprout a stem and leaves.
Mister Rogers plays a few games that require patience. He checks on his growing bean plant. In the Neighborhood of Make-Believe, Purple Panda experiments with 4P (Planet Purple Plant Powder).It causes flowers to grow on Daniel’s clock. Prince Tuesday would like the powder to make him grow, but Purple Panda tells him to take his time growing up. Mister Rogers goes to see the Harlem Spiritual Ensemble practice.