The story begins after the ending of Legend of Sword and Fairy IV. Liu Mengli returns to her hometown from the demon world and meets an old friend but unexpectedly learns that Lingsha is deceased. Fortunately, Han Lingsha and Yun Tianhe have a daughter named Yunluan and nicknamed Shasha. She is smart and playful just like her mother. This makes Mengli very happy. , And later in the conversation, we learned that Lingsha obtained the breath of the dragon with the help of Shenlong, and the time of immortality was forever fixed at that moment, but giving birth to offspring will make the breath of the dragon pass to the offspring. Without protection, Lingsha was quickly eroded by the cold and died. Although she knew it, Lingsha never regretted it at all. Ziying was unwilling to accept the fact that her lover had passed away, and stayed alone in the sword tomb to look for a sword that matched the tassels of the Kowloon silk sword. Day after day, every year on the anniversary of Lingsha's death, he would come back to see him, but he did not want to meet Tianhe until Lingsha She appeared to comfort Yun Luan and asked her to take care of her. Ziying taught her swordsmanship. Yun Luan soon grew into a graceful girl. In order to help her mother and help her tribe get rid of the bad luck that bound them, Yun Luan embarked on a journey with Wangshu Sword. Who and what will she meet? An unknown journey awaits her.