Twenty-two-year-old graduate student Yu Duoduo was too tired and fell asleep while rushing to write her final thesis. In her dream, the pressure she was experiencing in her life and the pain she had experienced came one after another. Duoduo didn't know that in an instant, her life was turned upside down and she had a chance to start over. At the same time, in the early Spring and Autumn Period (681 B. C.), Ji Yu (sound zhēng), the 9-year-old daughter of the Wei Kingdom, also had a dream. Her dream was relatively simple. It was the scene the day before when Wu Kui, the eldest son of Duke Huan of Qi, met his father Zhao Bo in the main hall. The ten-year-old child behaved like an adult, which she could not understand because of her ignorance. It's just that this is an imperfect transposition of text operations. Duoduo traveled to the Eastern Zhou Dynasty and had a body that was exactly the same as Yu's, while Yu's kept everything about himself. Duoduo, who had just arrived in Weiguo, faced the dilemma of language barrier and unclear etiquette. She lost the comfort and affluence provided by the achievements of modern material civilization, which made her at a loss what to do, struggled to move forward, and even fell into a swamp of depression for a time. The real Ji Yu was adopted by Yu's mother, who had lost her biological daughter and was suspicious of Dou, and changed her name to Yu Zheng. As the contact deepened, Yu Zheng heard more and more Duoduo's stories, and gradually began to understand some things, something she might never realize in another world.
How will the relationship between Ji Yu and Wu Kuai develop? Will her mother Xuan Jiang's complicated past affect her future? Can the history of her becoming Mrs. Xu Mu be changed? In the conflict between her family and her country, where will she go? Can Yu Zheng grow up happily as his mother expected? How far will her artistic talents stretch in the modern era? Will she bring good news to her parents' reconciliation?