After the encounter with the two groups of ghouls and ghasts, the party takes a short while to compose themselves, then continues to look to find a way through the room with the copper floors and past the flesh golem. Mantis tries on the heavy rubber-soled boots found near the copper mine, and hopes that they will be strong enough to survive the lightning. The party then advances into the copper-floored room, led by Mantis.
He enters the room, and waits to see what happens. Lightning streaks from the skull, and arc off of the ceiling and floor. The boots seem to make him immune to the electricity, but not to the attacks of the golem, which lumbers forward and takes a swing at him. The strange skull continues to float around the room, electricity streaking from it, as it fires rays of magical energy at the party. Shazuu blasts the golem with arcane energy, and his spell drags the creature out of the room, into the hall, and off the dangerous floor. The group attacks, and the golem tries to force its way back to the copper floor.
The party pushes back, and the fight turns into a battle for position as Kherek, Shazuu, and Tang Wu push and shove the creature back and forth. Mantis fires at the skull and bats it across the room as the group continues to hammer on the golem. Eventually, both foes fall, and the electricity fades from the copper floor.
The group moves past the copper room, and through several tunnels. Eventually, they enter a large chamber of dwarven make. Scattered around the room are overturned mine carts and piles of rubble. At one end is a red stone altar. Shazuu is approaches, and sees that it is covered in runes. He touches the altar, and using his new enchanted hat, recognizes the runes as Dwarven. He learns that it is an altar to Dumathoin, the dwarven god known as the Keeper of Secrets. The runes are confessions of dwarven misdeeds kept secrets. While examining the altar, he realizes it has been purposefully desecrated, and is covered in dried bloody hand prints. Tang Wu uses holy water to clean the blood from the altar, and realizes his sight now extends further into the darkness.
Meanwhile, Shining Brow searches through the rubble and mine carts. He finds four shiny stones, apparently precious ore. Shining Brow and Mantis hear a low conversation of unintelligible voices coming from further in the chamber. A glistening mass of flesh, ooze, and mouths emerges from the darkness. The party recognizes the creature as a gibbering mouther, and turns to attack. A series of rapid attacks silence the maddening sounds, and destroys the monster.
The party reconvenes and moves on through a tunnel to the south, to a new cavern. Bisecting the cave is a wall made entirely of bones, skeletons, and rusted armor. It extends to about 8 feet high, with a narrow gap at the top. Kherek recognizes them as hobgoblin bones. Tang Wu climbs the wall, and after a minute, the rest of the group follows.
After crossing the wall, they begin to look around, and hear what sounds like the noise of battle. Following the sounds, they sneak down the hall, and hear voices shouting at each other in Infernal and Common. The group sees three corpses on the ground. Two nothics stand next to an insect-like creature. All three are menacing a single human warrior, but turn to face the party when the warrior calls for help. The group leaps to his aid.
Tang Wu charges the three demons and the party starts casting spells. Tygorr attempts to use the rod of rulership to charm the demons, but only catches one of them. The largest demon makes a sound, and a green mist begins to pour out, poisoning some of the group. The unknown warrior uses a potion to heal himself. The group continues to attack destroying the Infernal creatures, which melt away.
The group begins to question the warrior, who is named Rex the Hammer. Mantis shows him images of some of the other adventurers the party has met in Undermountain, but the man does not identify any of them. Tang Wu begins to demand payment for saving the man, who gives Tang Wu all of his money.
Tang Wu starts to walk out, but the man spits in Tang Wu’s direction. Tang Wu starts to lecture him about honor, and the man insults Tang Wu’s mother. Tang Wu leaps to attack the man, who pulls a great sword. Mantis tries to break up the fight, but Kherek knocks the man down. Tang Wu starts kicking the prone warrior, and Shazuu joins the attack. The warrior stands up and attacks Tang Wu, injuring him. The rest of the party stands back while Tang Wu, Kherek, and Shazuu knock him down, surrounding him and kill the recently rescued prisoner.
Tang Wu takes his backpack, Kherek takes his short sword, and they strip the body. Mantis begins to identify the items they find. Tang Wu walks, but again sees the doll with the fiery eyes, which disappears when he strikes it. He returns as Tygorr sends away the charmed nothic. The party begins to argue about recent actions.
The group decides to take a long rest. Mantis and Shining Brow set up two tiny hut spells for themselves.