After the Penglai War, Tu Su passed away, and everyone was immersed in sorrow. The great goddess Nuwa came to Tianyong City and told Baili that Tu Su would be reborn in three years, but he had another identity - Prince Changqin.
Three years later, Lan Sheng and others gathered in Tianyong City to congratulate Ling Yue on becoming the leader. Lu Ziling, the eldest disciple of Kongling City, and his junior brothers came to congratulate him. When everyone looked at his face, they were also very excited. It was Tu Su's face, but he had forgotten everyone. An unprecedented natural disaster was about to hit the three realms. Lu Ziling, who owned the Prince's Changqin Fairy Spirit, had been pursuing Su Su. Qingxue, the leader of Tianyong City, Ling Yue, and others are on the road together again. Nangong Ziyou, the lover of Changqin from a thousand years ago, is accompanying her all the way. Facing her lover from thousands of years ago, can Su Xue reunite with her lover? Can he remember the person he loved most in his previous life? Where should Ziyou, who has become a demon, go? Can Baili Tusu's soul return smoothly? The ancient sword will give you unforgettable love in this life. Grow old together