Frank, an ordinary man, is accidentally thrown into a hidden dungeon never meant to be accessed. With only a passive aura ability that deals minor damage and regeneration that barely keeps him alive, he exploits the system’s errors to gain power at an unnatural rate. Using earth magic to trap monsters and a crafting system to reinforce his survival, Frank slowly carves his way through an impossible dungeon—until he becomes a force so strong that even the alien administrators take notice.