They're still in Helician Labs, back at the forest room full of invisible predators, and the counter reads Scoti 78, Basket 73. One of them has re-geared: "I used all of our magic experience bottles." The plan this time is simple. "We're gonna burn down everything."
Burn it all down
Fires go in on both sides, and then they pillar up and start a bridge above the trees, as high as the ceiling lets them. The predators can still climb up and knock them off, so safety rails go on the edges. Basket has Arcane Bombs on the hotbar too, the "TNT trap potions," with a promise not to throw them near the other one. The only worry: "This foliage is so thick, dude, we might blow up an emerald and not even know it."
Then the fires just sit there. "We've got fire spread turned off." The first fires they set are still burning in the same spots, and nothing around them has caught. "All we've done is created some way for us to get injured."
The legendary weapon
So they keep building from the bridge toward a room encased in glass. On the way they pass the redstone and TNT they decided last time not to blow up, with gold and diamonds around it and probably a charged creeper spawner inside. A dirt staircase goes down into the next room, and there's a "legendary weapon with obsidian and creeper spawners around it."
The fix is a lava bucket: set off the spawners, stay out of range, and pour lava to burn the creepers and light up the spawners. The scientists walk right into it. "I thought they were scientists. Don't you know lava is hot?" A charged creeper hides in a cove next to the chest until a bow takes care of it. "Dirt and charged creepers, man. What could possibly go wrong?"
The Supercharged Blade
Spawners down, the chest opens. It's the Supercharged Blade, a Legendary Item: Sharpness II, Smite III, Knockback I, Unbreaking I, plus resistance while you hold it, 20% speed and 7 attack damage. "This blade seems to be a never-ending source of high-voltage electricity."
They compare it with the other sword and figure the stats "might not be quite as good," but the resistance and speed are hard to ignore.
Up in the trees
The wooden walkways in the canopy are the next problem. Predators can get up there, so one of them starts cutting away branches and bushes to leave fewer paths. The other runs off, kills three spawners including a charged creeper one, and comes back. "Plan C, run away." More diamonds and TNT sit on the far side, and those get ignored for now.
There's an emerald up here, and the spawners around it are gone. Predators can still be heard walking around close by. "Cover yourself in mud, they won't be able to see." "That's how it worked in the movie." One of them grabs the emerald and runs it back to safety, and that's the episode.
Nobody dies this time. The counter ends at Scoti 78, Basket 73. The monument isn't shown, so the emerald blocks stay at 8 of 12.