While on the other side,
Inside the Great Forest of Tob.
Arche uses her telescope and views the top of the mausoleum of Nazarick's Tomb from a distance, but she cannot identify what era or setting it originates from.
Hekkeran believes that will just mean more rewards for later.
Roberdyck was reminded about the powerful undead that Eero was talking about, but they whispered so no one else knew it. Imina wonders aloud what kind of person could have built a tomb in this exact area to have been buried within.
Hekkeran is excited at finding more from the unknown, but Arche is too focused on the task of her wish staff didn't care about any wonder; her teammates laugh at her single-mindedness, with Hekkeran acknowledging this could be their best job ever.
In the dead of night, Hekkeran finalizes the plan that they will have each team move simultaneously at a given signal.
Gringham's team enters their entry point and finds a burial room with an unknown banner over a sarcophagus, with none able to identify the crest.
Alone, Gringham and his party, Heavy Masher, talk casually for a moment. Upon examining the banner, they find it is woven with precious metals worth tens of thousands of coins.
Gringham orders them to leave it to focus on the main objective, and they open the sarcophagus. They are astonished to find it filled with Brim treasure, and when meeting with Hekkeran in the central mausoleum, the other teams had already found an incredible treasure as well.
When arriving at the stairs to descend into the First Floor, the smell of the dead fills the air, leading to worry about the undead below. Parpatra requests his team look for hidden entries around the surface.
Parpatra only asks for a compensation fee of 10% of all treasures should a safe route be found, with Hekkeran and Grigham agreeing, but before Erya can voice his opinion, Parpatra takes his leave.
As they enter, Roberdyck senses no undead responses, and Heavy Masher members note the tomb to be at least 600 years old, making it more valuable and a historical find. Erya, being impatient, hurries the others as he wants to kill monsters, and everyone sees general skeletons running at them from down the hallway ahead.
Gringham eliminates the skeletons and advises them to be cautious going forward, as there could be more powerful undead later on.
At the base camp, Momon notes that the workers have entered the tomb, and another gold adventurer states they are still comrades in this mission, hoping they'll return safely; he then asks Momon's opinion.
He slips, stating they'll die, but quickly corrects himself that they have that kind of resolve in case they run into danger to keep a safe mindset as a new ruin means unforeseen dangers; the gold adventurer buys into that and is relieved of any confusion. Momon goes to rest as the gold adventurer takes first watch, and returning to his tent, he returns to his Ainz persona to let Pandora's actor take his place while he oversees the eventual retaliation for the workers' invasion into the tomb.
Ainz enters the throne room with an awaiting Albedo. Asking Albedo about the preparations for the planned visit of the workers,
Albedo assures him that preparations are complete and that their "guests" will enjoy the surprises. Ainz is pleased and looks forward to seeing Albedo's measure of hospitality.
As he sits on the throne, Albedo pulls up light monitors to view the various worker groups; Ainz notes their entries, ordering Albedo not to let a single one go unscathed.
As Albedo promises to punish the thieves for trespassing into Nazarick, she asks Ainz which group he'd like to use as guinea pigs for his 'new sword', with the Overlord thinking about it.
A little while later, as Team Foresight is walking with Arche, noting it was all too easy to reach as far as they did, Imina warns them to be quiet. Looking around the corner, they see a group of undead soldiers. Arche detects 1st Tier Skeleton mages, providing them support, which could prove problematic for them going forward. So, Roberdyck uses his Holy Faith magic to destroy the undead group in an instant.
Meanwhile, outside, Parpatra's Dragon Hunt notes the loss of profit, but their leader notes that entering an unknown tomb right away invites too much danger and is using the others as the canaries in a coal mine.
Yuri Alpha surprises them by acknowledging a level-headed decision. Dragon Hunt turns as they see the Pleiades (minus Narberal) at the top of the staircase; one of the Dragon Hunt members notes that maids at a tomb are bad taste since they mustn't be good at their jobs, which triggers the Pleiades' rage.
Dragon Hunt tenses up sensing this killing intent, except for the guy who triggered them; when calling for to kill them, Yuri calms her sisters to focus as they will kill them, but due to their restrictions by Ainz, they cannot kill them directly.
Yuri summons the Old Guarders to be Dragon Hunt's opponents. Parpatra believes that the Old Guarders are the most powerful of the tombs, with the Pleiades looking at each other. Parpatra finds that his group is now the Canaries. Yuri calls for their battle to begin.
After a few minutes, the Pleiades are saddened to see such weaklings fighting a small squad of Old Guarders, as only Parpatra and another member of Dragon Hunt are all that remain.
Giving a narration, the Pleiades see all, but Parpatra dies. As Entoma drools overeating one of the fallen Dragon Hunt members, Yuri reminds her that they are only to collect the fallen. After Parpatra falls, Yuri calls for the still-breathing to be healed and sent to the torture chamber, while the dead are examined by Ainz.
In the tomb, Heavy Masher runs from a squad of Elder Liches, shooting fireballs at them. As they run, the thief of the group finds a door to enter through and hide.