Dominic, a top-tier FBI agent, rescues a stunningly beautiful and seemingly helpless "female slave" from an underground auction; he then impulsively marries her to escape a forced alliance with the underworld orchestrated by his corrupt superior. He fights tooth and nail against criminal syndicates to protect his wife—unaware that the fragile, clingy woman who constantly dotes on him is actually the "Godmother" of the "Shadow Throne," the shadowy mastermind ruling the global underworld! When his "delicate wife" single-handedly wipes out elite assassins at an underworld summit—forcing every crime boss present to kneel and address her as "Godmother"—her agent husband is left completely dumbfounded: "The woman I risked my life to protect turns out to be the Queen of the North American underworld?!"