Renowned dancer Xiaodie Shang choreographed a piece titled “Butterfly” in honor of her lover who departed five years prior. The performance received high acclaim, leading to an invitation from an international cultural fund to work on choreography in Budapest. Among the dancers, Xiaodie sees the most potential in Lu Bai, despite her lack of confidence. Lu Bai confides in Xiaodie that she hopes to locate her missing sister through the butterfly cemetery. Meanwhile, Xiaodie discovers that Qiushui Zhuang, the heir to the fund, is her former lover from five years ago. As events unfold, with dancer You Song being poisoned, Qiao Tian’s downfall, Lu Bai’s disappearance, and threats against Xiaodie herself, all clues seem to converge on the enigmatic butterfly cemetery.