Bright Moon Does Not Trouble Emperor's Heart tells the story of Cheng Mingyue entering the palace, where she meets and accompanies the young Zhou Hui. She takes care of his daily life and accompanies him in reading and growing up. Years later, Zhou Hui ascends the throne and always cherishes Cheng Mingyue. Faced with new identities and life, Cheng Mingyue gradually understands that what truly matters is respecting one's inner self and own choices. She pours more of her energy into the growth of her daughter Wangshu, carefully guiding her in studying and understanding principles. In the end, mother and daughter accompany each other, each walking towards a broader new chapter of life.