On the day the world ended, Lee Ruhan was just another powerless laborer struggling to survive. Humiliated, exploited, and finally dragged into a deadly labyrinth, he seemed destined to die in the mines like countless others. But at death’s door, he awakens an unheard-of S-Rank ability: Dwarf Shelter Operator. Hidden within a mysterious safe haven between dimensions, Ruhan gains access to fertile land, loyal dwarves, and a chance to build something of his own. To survive the labyrinth’s brutal hierarchy and uncover the secrets of his unique power, he must transform a humble shelter into a thriving stronghold.