The bride replaces her sister in getting married, but she reveals the secret of the Huo family's century-old poison - when the bloody wedding bed becomes a battlefield of life and death, how can she use blood as a guide and heart as a blade to tear open the hypocritical mask of the wealthy family?
In April in Chongqing, the humidity is everywhere. Su Ci got married in place of her sister, and the moment she stepped into the Huo family's old house, the gears of fate began to turn crazily.
Marriage letters, blood contracts, weird marriage customs, and a series of murders hidden behind the luxury of the Huo family. The moment she puts on the jade ring, strange visions come flooding in - her sister's despair, the bloody light of the snake-shaped cufflinks, the secret on the tip of the old lady's needle. All clues point to a taboo truth: the century-old curse maintained by the Huo family through "heart-changing".
She can peek into the past by touching objects, and this "gift" allows her to see a glimmer of truth in the fog of the Huo family - her sister's death was not an accident, but a sophisticated murder. But as the investigation deepened, Su Ci discovered that there was a strange power in her body that was homologous to the Huo family's bloodline, and that the same blue fluorescence as hers was hidden in the cold eyes of her newlywed husband Huo Chenzhou.
Huo Chenzhou, is the appearance of this man a turning point in her destiny, or is it a carefully laid trap? As she gradually uncovered the secrets of the Huo family, she discovered that her fate had long been entangled with Huo Chenzhou: the pain of empathy, shared hallucinations, and even synchronized heartbeats all pointed to a shocking truth - they were forcibly bound by ancient poison and became each other's "symbionts."
When poison, curse and forbidden love intertwine, Su Ci must make a choice between the truth and survival. And the centuries-old secrets hidden deep in the Huo family are waiting for her to reveal them with blood.
