Lin Xin, a young psychiatrist, entered Qingshan Mental Hospital for the first time. He was full of ideals but was soon involved in an unfathomable mystery. The mental hospital is calm on the surface, but in fact there are undercurrents. The strange words and deeds of the patient Su Yao, the whispers at night, and the director's secret experiments all hint at the dark secrets of this building. As the investigation deepened, Lin Xin gradually discovered that the mental hospital was actually a secret base for human mind control experiments. He teamed up with Su Yao to try to uncover the truth, but found that he was facing not only an external conspiracy, but also an inner struggle and redemption. This is a journey about truth, trust and self-salvation, looking for that faint glimmer of light when you are lost.