Lance Murphy, the hidden supreme master of the underground Obsidian Organization, returns to Fog Harbor after five years just to celebrate his adoptive father’s birthday. He pretends to be a penniless ordinary security guard to avoid exposing his identity, living with his four outstanding adopted elder sisters who run business, combat, law and surgery respectively. Greedy tycoons keep bullying their orphanage and sisters for profit, mocking Lance as a useless mooch. When all threats pile up, Lance’s Obsidian King Ring reveals his true status. He easily crushes hostile conglomerates, punishes arrogant villains who threaten his family, and protects his warm adoptive family wholeheartedly. Between daily sweet sibling interactions and fierce business power confrontations, the story unfolds a thrilling hidden identity urban revenge tale full of face-slapping plots and warm family bonds.
