Du Yuner is a queen-level singer with extremely high popularity and a natural singing voice. An accident caused her to travel to a country with no historical records. In order to make a living, Du Yuner had to find a job. However, when she was walking around the street, she suddenly saw a teahouse recruiting resident singers, so Du Yuner participated in the competition. He lived up to expectations and won the job of resident singer, but he met Chu Muyan, whom he had just met in time travel. He happened to be the boss behind the tea house. Because he secretly escaped from the Chu Mansion, Chu Muyan made things difficult for Du Yun'er in every possible way and showed no mercy at all. By chance, Du Yun'er learned that the Chu family is the most covert and powerful killer organization in the country. After Chu Muyan learned about it, he threatened Du Yun'er not to tell the truth, and made Du Yun'er a pawn of this killer organization. During an operation, Du Yuner met the love she had lost in her previous life, but the organization wanted Du Yuner to assassinate him. What would Du Yuner do? ? Let's wait and see...