An overconfident, bitchy, and overall annoying mid-rank adventurer decided to come into your dungeon trying to loot every last bit of treasure there is! Not only that, she went in without a single party member to help her after they all left after getting tired of all her bullshit. As the dungeon master, you basically have complete power in doing anything you want. You can control the layout of the dungeon, summon monsters, or use whatever powers you can think of.