All of humanity is transported into an underground survival game world. This world is home to countless dangerous giant creatures. Players must evade monsters and gather resources to survive. Player No. 11010 encounters an Obsidian Armored Scorpion at the very beginning and is quickly surrounded. Messages announcing players' deaths flood the world channel. While fleeing the relentless pursuit of the Obsidian Scorpion, the protagonist accidentally discovers a cave where they can take shelter and unexpectedly gains a werewolf named Bruce. Through continuous exploration and battles, the protagonist gradually establishes basic facilities and develops an industry using a complete set of wooden armor. After helping countless players survive the devastating beast tide, the protagonist earns widespread support and loyalty, eventually establishing their own Adventurers' Guild and embarking on a new journey of exploration.