Shen Xin, a top psychological counselor, is extremely rational but unable to perceive emotions. She was assigned to conduct a psychological evaluation for Gu Yunshen, a business tycoon suspected of murder, but she has since fallen into an inescapable sensory prison - she feels his pain; she accepts his despair.
When one-way "sympathy" becomes the only weapon to explore the truth, Shen Xin touches the shocking injustice of a perfect crime in Gu Yunshen's broken memories and turbulent emotions. The mastermind behind the scenes is staring through the darkness at this fatal connection that she alone bears. This is an extreme pursuit in a prison of the senses. She is both a detective and his most painful witness.
