"Oh my gosh, it's been three months?" It has, more or less. For anyone watching on YouTube it just picks up where the last one left off. "It's like magic."
Emerald 25
First job: the emerald goes in the chest. "Oh, we're so close. 25." There's new glass for the house window too. Then they check where to go next. A sign on the wall says The Solar Citadel, Em:25-26. So there's still one more emerald back in the planets level. One of them saw that coming: "I've had months to wait for this moment and prepare for it. I knew you would forget."
The other sign points the other way: The Nebula Citadel, Em:27.
Under the sun
The idea is to go all the way down and look up at the bottom of the sun. They take the water down, landing among lava and obstacles. "Oh, it's so bad down here." All that lava moved after they poured water on top of the sun, so the whole thing has changed. Under the sun there's an arrow pointing toward the next level, and a mob that nobody wants knocked into the lava. Nothing on the bottom. They go back up the water, looking at the undersides of the planets on the way. Nothing there either.
Still not found
They walk the top of a planet. The trees don't have emeralds in them, and there's no axe to cut down the big one anyway. While they search, the talk turns to the new 1.13 update: lag, rubber banding, and a server that was so bad one of them logged off after 20 minutes. Stripped logs, though, are great.
Creepers, witches, a broken bridge so the mobs don't follow. The ender chests get checked. "I'd be really bummed if it's in your ender chest." It isn't. They dig under the arrow in case it marks a hidden emerald, and hit the edge of the planet. "I'm just frustrated." The creeper trap from a past visit is still there, too. They decide to leave it and work on the other area.
The Nebula Citadel
The new level sits over the void. "Avoid the void." There are ghast spawners on what look like dragons, and ghost guys with red eyes who "hit really hard and give you boo-boos." The call is to blow up the spawners, even if there's a chest under them. "Okay, got one." Another goes down soon after. "Last level. We're not saving anything, man."
Charged creepers
Inside the stone building there's a staircase with a quad creeper spawner on it, then a blocked-off area. "This game's very trappy." Charged creepers show up, plus something with a fire bow. The witch spawner goes. The charged creeper spawner is still there. Blocking with a shield doesn't help against those guys, "in case you're wondering."
Then Basket's screen goes red: BasketMC was blown up by Super_Creeper. Basket wakes up in the bed with an empty hotbar. They talk about where the shortcut to this level goes, and that's the episode.