Episode 4 of Minimalist picks up inside Miniature Mountain, one of the 24x24x24 dungeons on Kaladun's complete the monument map. Team B.S. fight their way to the wool, carry it home to the monument, and then go swimming in lava for a hidden chest. By the end the White Wool is on the monument and there is a set of new armor in the base.
Creepers in the dark
The episode opens in a mossy stone brick room full of mobs. There is "a spawner directly to the right," and creepers keep coming around the corner, along with skeletons and a baby zombie. Arrows are running low. "I'm about to lose mine," says one; the other has two left. Basket fights with a bow and a stone sword while Scoti_Garbidis shoots from the side.
The wool box
More creepers point the way to a block the commentary guesses is the wool box. "Don't let it blow up." Basket breaks in and opens a chest with two white wool blocks inside, and one goes into the inventory. The tooltip names Miniature Mountain. On the recording, the wool goes into the ender chest "just to be safe."
On the monument
A ladder leads up to the surface. From there Basket crosses a white path between blue waterfalls and a stretch of forest to the base, a hall of orange clay built over lava. "Don't trust that glass." The monument runs along one wall, each spot marked with a sign. Basket sets the White Wool on its spot, beside the empty Orange Wool one.
A chest in the lava
Basket has Fire Resistance, which works in here "as per the intro book," so Basket jumps into the lava pool to look for a hidden chest. There is one in the corner. Inside are three pieces of Emperor's armor, each "Fit for a king": a crown with Fire Protection, greaves with Blast Protection and boots with Feather Falling II. A chestplate and a single lapis come with them. "One lapis? What a tease."
The commentary weighs what to enchant with it and settles on a bow: "I can make a power one bow."
Where it ends
"Got a wool, got some magicky stuff, found some secrets." The two stand together in the base library, someone admires the new armor, and Team B.S. sign off.