Legend has it that there is a strange medicine in the distant Loulan, called a butterfly, which turns into a flower in summer and turns into a butterfly in winter and migrates around. Anyone who possesses it can realize any wish he or she has. In order to resurrect his beloved Qiuniang, the protagonist Zhuang Zhou is determined to find a butterfly. He travels to Loulan, but he meets a strange woman-Xinnan. She handed Zhuang Zhou a strange sword and said that only through this sword could she find a butterfly. Zhuang Zhou and Xin Nan embarked on a tortuous journey to find a butterfly. In the process, they encountered all kinds of incredible strange things, weird things, and dangers. At the same time, they also experienced the process from worries and trust to suspicion, misunderstanding and even breakup. The two people have fallen deeply in love with each other unconsciously, but they also caused deep harm to each other. Later, Xinnan died in Zhuang Zhou's arms, and Zhuang Zhou also found the butterfly he dreamed of, but who should he resurrect at this moment? Is it Xinnan or Qiuniang?
