When 24-year-old Mook's life collapses, she takes the last job she can find: a live-in maid for Khun Net, a stunning and cold 38-year-old woman. But her duties soon go far beyond cleaning.
From "employer" and "employee," their roles shift to "Mistress" and "Servant." Amidst scorching commands and intimate punishments, a nameless relationship sparks to life. Can a "necessary maid" become the permanent occupant of her mistress's heart?