Seo Mun-ju, a former U.S. ambassador turned presidential candidate and a widow, is a formidable blend of brilliant intellect and unyielding resolve, her elegant demeanor honed by years navigating global diplomacy. Haunted by her husband Jang Jun-ik’s assassination in a church, she channels raw grief into a fierce pursuit of truth, unraveling a web of espionage and betrayal with cunning determination, her sharp eyes masking a wounded heart.