As he’s exploring—alone, mind you, and at night, he quietly walks towards the fountain at the center of town, observing it before going out for a journey. After venturing thousands of blocks from spawn, he comes across a small, abandoned house alongside a massive deepslate cavern. After thinking about his options, he observes the house a bit closer, and notices it’s not a naturally generated structure, but is out of any of the other member’s building style. He decides to see what loot the house might hold, and then mine out the cavern for any resources it might hold.
When rummaging the house, he finds a few barrels with some scattered loot, such as paper, a few books, carrots, potatoes and rotten flesh. When walking back out, he notices an odd platform on the roof with a partially built wither summoner. He takes a moment before coming to the conclusion one of the members was going to summon a wither to cause chaos, but either got confronted about it, or dropped the idea.
After a bit of mining, he hears something and debates whether to return to the surface—maybe figure out why the wither summoner is there, or to investigate what is causing the odd sounds.