Mister Rogers enters carrying a large toy helicopter. Mister Rogers pretends to fly the helicopter around the room and then brings out a smaller helicopter to show how they are different in size. Mister Rogers goes to the airport to see pilot Maria Mancano fly Mr. McFeely around in a helicopter. In the Neighborhood of Make-Believe, Miss Paulificate and Lady Aberlin have been assigned the duty of “yo-yo guard” responsible for upholding the King’s recent ban on yo-yos. At the tree, X and Henrietta have two large yo-yo’s — “big-yos” — hanging from the branches. Meanwhile, at the Museum-Go-Round, Lady Elaine has become the pilot of a helicopter she calls “Yo-Yo” because it goes up and down in the sky. Taking the controls, she lifts off high above the Museum but is unable to bring the helicopter back down again. Lady Aberlin and Corney watch as the Yo-Yo helicopter continues to fly higher and higher. Back at the house, Mister Rogers reads to his TV neighbors from a book, “Is It Larger? Is It Smaller?” by Tana Hoban.