Su Qing, a music major, is arranged by her family to marry Shang Pu, a domineering businessman with a strong controlling streak. Her married life is stifling, and all she longs for is the freedom to live as she pleases. Shen Zhiyi, a maid in the household, harbors ulterior motives and takes advantage of a rare celestial phenomenon to switch identities with Su Qing. Su Qing simply agrees to go along with the switch. While Shen Zhiyi, now posing as the lady of the house, repeatedly gives herself away, Su Qing retains her talent and graceful bearing even in the guise of a maid. Shang Pu notices the changes and gradually finds himself falling for the real Su Qing. Facing one challenge and frame-up after another, Su Qing receives help from others and publicly exposes the truth. She finally breaks free from her constraints and rediscovers her passion for music. The two also learn to respect one another and remain by each other's side.