Mister Rogers comes to the house carrying a burlap sack. He asks viewers what might be inside and suggests all kinds of things. It turns out to be a picture of the Neighborhood of Make-Believe, which he hangs up in the kitchen. He makes a cape from the sack, using a giant safety pin. Betty Aberlin comes by for a visit, and she and Mister Rogers discuss the latest in NOM, including King Friday's anger and fear, which has caused him to establish border guards.
In the Neighborhood of Make-Believe, King Friday establishes the rules for his newly appointed border guard, Edgar Cooke. While X the Owl and Henrietta Pussycat discuss whether a war has broken out, Lady Aberlin is drafted by King Friday to serve as a border guard. Edgar Cooke demands to know her name, rank, and serial number. After a conversation with King Friday in the Throne Room, Lady Aberlin sings a sad song about the recent events.
Back at the house, Mr. McFeely stops by and sells Mister Rogers a copy of the Neighborhood News at the price of "four." The headline shows King Friday's new detail of border guards. Mister Rogers uses his new picture to point out where these guards will be stationed.
At the end, right before Mr. McFeely returns with the burlap sack, Mister Rogers sings the song Tree Tree Tree.