Mister Rogers arrives with a popcorn popper which he has received as a gift from his wife. Taking it to the kitchen, Mister Rogers begins to demonstrate the popper when he receives a phone call from Joe Negri inviting him come to the music shop.

At Negri's Music Shop, Mister Rogers is introduced to Ray Detwiler, a horn player who demonstrates a variety of rare horns. With Mr. Detwiler, Mister Rogers and Mr. Negri play Tree Tree Tree.

Back at the house, Mister Rogers returns to the popcorn popper which he demonstrates for viewers. Patiently waiting for the popcorn to pop, Mister Rogers sings Let's Think of Something to Do.