They're still in Helician Labs, and the counter reads Scoti 72, Basket 71. The intro gets restarted after a wrong button, and then the plan for the episode: "By unanimous vote, we decided we're gonna go down." "By Scoti vote, we're gonna go down." One of them gives the reason: going down means they can take out the spawners.
Do not press this button
The lower floor has the same mix as before: archers with dispensers on their heads, guardian spawners in the walls, and charged creepers. A chest on Basket's screen holds an Automated Pickaxe with Fortune II. There's a sign that one of them reads out: "Do not press this button." It gets pressed, there's TNT, and they run. "It made me feel like you wanted me to push it." "Well, I want you to push it, but I also don't want to lose everything."
More Lightning Traps turn up in a room full of switches. One of them also finds out a helmet is missing and can't remember ever having one.
Now fully automated
They break a wall down ("like Jericho") into a big room with conveyor belts and a computer built out of robots. Spawners for skeletons, the science mobs and a harming potion spawner in the ceiling all get taken out. Then the chest in the middle: "Ooh, Mechano-Pick." This one is a Legendary Item, Efficiency IV and Fortune IV. "I'm glad we didn't mine those other diamonds."
Next to it is a station one of them reads as a shield from static electricity. Stepping on it gives extra hearts, and Basket's screen shows Absorption II afterward. "If we didn't have absorption I would have died like a hundred times here," one of them says later. Then they climb a shaft on ladders, hugging the edge.
Creepers on spiders
Upstairs is a creeper charging room, then a big room with "spiders on spiders" and charged creepers riding them. One of them gets stuck in a web and poisoned. Then the chat: "BasketMC was blown up by Symbiotic Creeper." "We're tied." "Team 72."
Basket goes back in for the gear while the other one shoots, and it all comes back. "Looks like I recovered my stuff back, I'm a happy guy." The arrows don't seem to kill the dispenser-headed archers, and the creeper spawner turns out to be buried in a stack of soul sand. There's an emerald in the room too. After that it's slower going: "I have like the best stuff in the world." Webs everywhere, so one of them makes shears.
The Rocket Launcher
In a side room "not secure" because the glass broke, the spider pigs and spider cows have gotten loose. Another legendary item comes out of a chest: a bow called the Rocket Launcher. When flame particles show up around whoever holds it, the next arrow explodes near an enemy, with a 15 second cooldown. "I'm not using my bow ever, so if you want to use it."
A few seconds later Scoti is standing there with a bow and flames all around. "You got little fire particles around you." One shot kills a spider but leaves the creeper riding it alive.
Upstairs there are spider cows and another spawner. Then it happens again: "BasketMC was blown up by Symbiotic Creeper." "Whoa, those guys blow up so fast."
The episode ends at Basket 73, Scoti 72. The monument isn't shown, and the emerald blocks stay at 8 of 12.