Hyunwoo, an abandoned E-rank hunter, has always struggled to survive in the brutal world of dungeons and monsters. Barely scraping by as a tag-along in high-risk raids, his life changes forever when he stumbles upon a mysterious dungeon that grants him a unique and forbidden ability: Dungeon Contracting. With this newfound power, Hyunwoo can form pacts with dungeons themselves, growing stronger with each trial he overcomes. Along the way, his ability to dominate and bind others to his will leads to alliances—and harem-like bonds—with powerful women, each with their own skills, personalities, and secrets. But this power comes at a cost. The more Hyunwoo embraces the darkness, the closer he edges to losing himself entirely. Can he master the art of domination and become the ultimate ruler, or will the weight of his contracts drag him into the abyss?