Mister Rogers arrives with a duffel bag and demonstrates the bag's zipper. Inside the bag, he has a pair of boots and another smaller bag with zippers. Mister Rogers mentions that zippers were originally called "clasp lockers" before he shows a film about how people make zippers. Following the film, Mister Rogers talks about asking questions when you're curious. In the Neighborhood of Make-Believe, the Trolley delivers the mail which includes a lesson on Native American culture for X the Owl from the Owl Correspondence School. Meanwhile, Neighbor Aber agrees to be in charge of Prince Tuesday's day and night care while the King and Queen are away. Mayor Maggie talks to Daniel about the importance of sharing feelings before she sings Then Your Heart is Full of Love before Lady Aberlin talks with Prince Tuesday about his feelings. Hurt by his parents leaving him while they go on a trip, the Prince is provided a telephone number where he can reach them when they are gone. Back at the house, Mister Rogers continues his discussion of different types of day and night care and the many feelings that go along with those arrangements. Lastly, Mr. McFeely delivers a large box that Mister Rogers uses to demonstrate different types of zippers and fasteners. Part of the "Mister Rogers' Neighborhood" series.