In Muliang City outside the troubled times, a girl who grew up wearing men's clothing met the most important person in her life. She wanted to avenge the genocide and was also a young man from Fengli Kingdom who came to find her old friend. Follow him no matter where you go. After meeting many people and many things, is it possible to complete the promise of marriage with him? Their best friend, the boy who has been hiding for many years, can't find the girl to whom he made a marriage contract at a young age. His eldest brother also remembers that the woman he has been waiting for for ten years was once dressed in military uniform. The prince of Fengli Kingdom made an oath that I will marry you. What will happen to the woman who only wants to be with one person? The fate of the two girls in the family, Feng Yun, and the cynical Feng Yi are involved in the fate of the two girls in the family. . . There are many people and many things, whether it is fighting on the battlefield and vying for power, or whether you sing and we play together and talk under the moon, I am willing to be with you, just because you are a gift, and I want to sing a worry-free tune with you all my life.