An underground empire's fearsome ruler emerges from the shadows, bound by a marriage contract that draws him back to the city. His destined bride proves to be an icy enigma, untouched by the admirers circling her—a forgotten flame, an alluring coworker, and an endearing young companion among them. When formidable foes strike with deadly precision, witness the King of the Underworld unleash his lethal expertise and reclaim his throne.