While investigating a series of bizarre death cases, Lu Chuan met the mysterious cardiac surgeon Gu Yan. The two were hostile at the beginning, but gradually discovered that they were inextricably linked to each other. As the investigation deepened, Lu Chuan discovered that there was a huge conspiracy hidden behind these cases, and Gu Yan's true identity gradually emerged. In the process of tracing the truth, the two continued to engage in psychological games, and finally revealed the secret hidden in the darkness.
