Episode 4 starts where Episode 3 stopped, inside the Nether fortress, with "Episode 4" across the screen. Chat has just posted "UHC BLOX | Mark | 60 Minutes" and "UHC BLOX | Shrink | Activated," so the border is moving in. Basket and KSores of the teal team want two things here: blaze rods and nether wart, the last pieces for brewing health potions.
Chests in the fortress
The fortress halls are dark nether brick, and the pair block off openings behind them as they go. "I got us another saddle so we can have our horse army if we want," a voice jokes. One chest holds gold horse armor. Another is better: "Oh, two diamonds in here. We can make an enchantment." That means an enchanting table, as long as they find a safe corner to set it up.
Fighting blazes
What they really need is a blaze, ideally one inside, "so we don't have to worry about him fireballing us." The first one floats out in the open. They try to lure it down and knock it into lava, and it does not go cleanly: the Tab list later shows KSores at about three and a half hearts. "We have one," a voice says. For the second rod they dig in under a set of stairs and come at the blaze through the wall. "Okay, I killed him and we have it."
Enchanting, and one iron short
They wall themselves into a small room. The next snag is iron: "I have four iron, so we need two more for a cauldron." A chest down the hall gives them some iron and more diamonds, and the enchanting table goes down beside a chest. Basket's tooltips show Feather Falling I on the iron boots and Projectile Protection I on the iron helmet, and the table offers Sharpness I for the sword.
While they work, chat posts "Kondrik fell out of the world." joehillssays asks "did the broder get him?" and Slyther_ answers "wasnt Kondrik already ded?" When Basket opens the Tab list, Slyther_ and Kondrik both show no hearts. BasketMC has seven, and KSores is still low.
Back the way they came
They are still one iron short, so the plan changes: get back to the overworld, where they can heal. "We just need to get back safely," a voice says. "I'm keeping a lookout," a voice adds, since KSores is still low. Getting out of the fortress means retracing the route, past a wither skeleton they can hear, a magma cube, and a blaze that lands a fireball on one of them. Out in the open they cross soul sand and stretches of lava. Chat posts "Slyther_ fell out of the world" and then "Brenin_1 fell out of the world," both players already out of the match. Then the cobblestone bridge from Episode 3 comes into view across the lava lake. "I recognize this place."
Through the portal
Their portal is where they marked it. They block the tunnel behind them so "they'll just think the pillars are there for some random reason." Before going through, they plan for a trap or another team on the far side. "I'll give you all the super valuable stuff and I'll go first, 'cause I have less health," a voice offers. Basket steps through into the cave on the other side.
Back in the overworld they have water, a crafting table and the rods. A voice wants to use redstone for a longer regeneration potion. Glowstone would not help anyway, since level 2 potions are off. As chat posts "UHC BLOX | Mark | 80 Minutes," the episode ends with Basket alive at seven hearts, ready to brew.