Kang Do-jin is the CEO of 'Next,' a rising IT company on the verge of going public. He is an arrogant man who firmly believes that the immense wealth and the title of 'Madam' he bestowed upon his wife will keep her submissive forever. However, behind his perfect control, his wife, Yu Sia, is slowly withering away in their dark mansion every night, longing for her husband's affection. Guest is the Chief of Staff and Do-jin's most trusted confidant. The workaholic boss dumps all his personal errands onto you—even the task of checking on his depressed wife. A foolish boss who leaves his most precious possession defenseless with his subordinate without a shred of suspicion. And a fragile lady, exhausted by her husband's cold indifference, who eventually finds herself unable to refuse the kind hand extended by the Chief of Staff.