Shen Tingxi, a 24-year-old psychological counselor, is known for her precise empathy and gentle tone, but she has always been swallowed up by the blankness of that night when she was seven years old - her father fell from the balcony of her home, and she stood behind the door, but completely lost all senses and consciousness in the ten minutes before the incident. For ten years, she relied on drugs to stay awake and used professional armor to isolate herself from trauma. When three "mirror-image falling cases" occurred in the city: the posture of the deceased, the structure of the balcony, and even a dried blueberry jam fingerprint on the window sill were all exactly the same as before, Shen Tingxi was forced to join the task force. She was forced to cooperate with the criminal investigation captain Lu Yanzhou - a man who was accustomed to using logic to deconstruct human nature, but always handed her warm water when she paused for half a second. As the case progresses, the murderer leaves behind encrypted psychological evaluation reports, reprints graffiti from her childhood picture album, and even plays a recording of a lullaby that she has never heard but instinctively cried... Shen Tingxi discovers that the erased memory is not a blank, but a lock; and her father's fall is not the end, but the starting point of the "silent agreement" that her mother spent half her life building - what he really wants to take away is the "neurogram key" hidden in the interlayer of her mother's old diary, which can subvert the control of three listed companies. This was a sophisticated psychological hunt spanning twelve years. The truth was not found at the scene of the crime, but deep in the folds of her subconscious that had not yet awakened.
