In this episode, Mr. Hooper explains the word "closed" to Big Bird, who initially misunderstands. The segments that follow include a series of educational and entertaining moments: a cartoon about size comparisons, a Muppet moment with Ernie, Bert, and Shola discussing size, and a Spanish song about body parts. Jasper and Julius teach about elbows, and viewers enjoy a song called "Here Come the Beans." Leslie Mostly interviews Count von Count, and a film showcases the otter. Linda and a boy sign "CLOSED," while various characters explore measurements, letters, and cooperation through skits and songs. Grover's magical mishap with the Amazing Mumford and his waiter antics with hamburgers bring humor. Celebrity Ray Barretto performs, Ernie learns he's special, and cooperation is highlighted by Bob and Maria. The episode winds down with Big Bird narrating a leaf scene, Bob discussing deafness, and Mr. Hooper closing the store, ensuring to announce the sponsors.