Su Ye, a psychological counselor, can empathize with the moment of death of others. When she empathized with a client's "suicide" scene, she felt a terrible fear of suicide and was trapped in a repeated death cycle every night. In order to get rid of the nightmare, she had to seek help from her ex-husband and criminal police captain Lu Chen, whom she had become a stranger to. One is collecting fragments of perception in the cycle, and the other is looking for cold evidence in reality. The two struggle to join hands between the belated truth and unhealed old wounds. As the end of the cycle approaches, what they want to solve is not only a perfect copycat crime, but also a years-long mental mystery that straddles the line between trust and understanding.
