Stripped of form and fortune, Lin Jun awakens as a fungal entity in the Underground City's hostile depths, hunted by demons at every turn. Without limbs, sight, or voice, he harvests survival through a plunder skill that strips fallen enemies of their essence. His mushroom garden becomes both sanctuary and secret weapon—a foundation for toppling the dungeon from within. When a careless Duke's daughter crashes into his realm, equally transformed into fungal flesh, she arrives alongside diamond-tier adventurers sworn to bring her home. The collision of rescue and revenge sparks unexpected dialogue: "If you want to kill, then kill!" "Why would I want to kill you? Could you please calm down a bit?" In the darkness of the Underground City, alliances form in the most unlikely ways.