The title card reads "S1E21," with on-screen credits for Precisi and cainadai, and both nameplates show up in the first minute. The group has a new project. "It's called Bubble City. That's the name right now. It may change by the time this airs."
A base under the water
Basket opens in what the call calls "an underwater road," freshly "disabled." Bubble City is an underwater secret base, and for now it is mostly a lobby. "Eventually this will all be aired out so that you can walk without having to swim." Up top is the spot planned as "the big entrance to Bubble City," maybe with a staircase "that swirls around."
Gear came over from the old base, and the farm is already going. "No base of ours is complete without a carrot patch." Level two has potatoes, sugar cane and cactus, and a quick test settles one question: "It is in fact live cactus." Through the back is the bedroom, with one bed for everyone. "We all have to share a bed for now."
A zombie water park, take two
While the others decorate, Basket goes after a tunnel full of zombie spawners. Someone on the call sums it up: "He's making a zombie water park. To rival his creeper water park." Basket has learned from the first one. "Water elevators are big bottlenecks, especially when you have this many spawners." This time the plan is a crushing trap. Pistons will push the zombies along and crush them "so that they get hurt enough," with no single-file elevator to jam up.
There's a catch. "I'll need to find slime balls before this will, any of this will work." Basket spent "about three nights trying to get slimes in the swamp" and got nothing. Meanwhile someone on the call offers planks for signs: "My planks are your planks, Basket."
Slime at the price of free
The fix comes by phone. The chat shows "Incoming call from CuddleSmash, pickup a smartphone to answer," and over the [cell] line CuddleSmash names the price: "low, low price of free." They agree to meet in the Nether, and Basket heads out. Getting into the meeting spot goes wrong first. "I guess I was underneath the main room and there's a bunch of lava there."
CuddleSmash is waiting by a portal. "here ya go." Basket types back "thank you sir!" and "You're on YouTube! :D," and CuddleSmash answers "hooray!" Before leaving, CuddleSmash asks "know how to use the ice?" Basket's answer: "yuppers. figured it out finally."
On the way out there's a pair of chests under a sign reading "Donations from The Acacia Tree," and out loud Basket says there are "netherwort and seeds for everything" in the Nether.
Music in Bubble City
"Alright, I'm back at the base, and I brought music." A record goes into the jukebox, Basket turns the game sound up, and Precisi and cainadai crowd around the stairs. The episode's description calls it an exclusive dance party.
Then the tour picks up again. The entrance now has its wraparound staircase, with a guardrail "so you can't hurt yourself," and the glass ceiling is still in progress. A new farm level has wheat and melons. The chicken did not make it: "that was our unfortunate drowning during the great water incident."
Sticky pistons
With the slime, Basket crafts sticky pistons, six of them for the crusher. The question is whether one sticky piston can push a block and another can grab it. "Yeah, you can push it and then have another one grab it," comes the answer on the call, and later, "Your logic is sound."
It doesn't get finished here. "Now I'm going to struggle some more with redstone, or with water currents and stuff." The episode ends on the end card, with no gameplay after it.