Nell Gwyn has never been a lady, nor does she pretend to be. Blessed with impudent wit and saucy beauty, she swiftly rises from the poverty of Covent Garden to become a sensation in the theater. Still in her teens, she catches the eye of King Charles II, and trades the stage for Whitehall Palace and the role of royal mistress.

Even though she delights the king, she must learn to negotiate the cutthroat royal court, where ambition and lust for power rule the hearts of all around her. For beneath her charm and light-heartedness, Nell has her own ambition to become no less than the king's favorite.