When Zhan Jinyu was eight years old, the Zhenbei Hou Mansion disappeared. She and her sister were sent to Jiangnan, where they stayed for twenty years. They are waiting for an opportunity. Zong Zhengyan is also waiting. He is the son of a noble concubine, and he has known since he was a child that he would return to the capital and settle a score with that woman. Zong Zhengshuo was the prince, and he wanted someone since he was a child - the girl who danced the sword in the martial arts field that year. He remembered it for twenty years. Four people, two roads, an old score. From Jiangnan to the capital, from winter to spring. Whatever should come back will come back.