On the seemingly peaceful campus, student Lin Yu was accidentally involved in a hospital kidnapping mystery. He firmly believed that he had witnessed the kidnapping, but the police found no evidence and was diagnosed with "persecution delusion." When he returned to the apartment, he was confused by the violent picking marks on the door lock and the inexplicable bruises and finger marks on the back of his neck. Hospital doctor Chen Feng and security guard Liu Yong behaved strangely and deliberately avoided him. Lin Yu faced a dilemma: whether to believe that he persisted in the investigation, or to give up because the outside world believed that he had mental problems. If the truth cannot be found out as soon as possible, he may be imprisoned as a mentally ill person or even silenced by the villain. In the process of dealing with relevant hospital personnel, trust crises continued and the relationship gradually deteriorated. Even if the truth is eventually discovered, there may be bitter consequences such as betrayal by someone you trust. Whether Lin Yu can break through the predicament and uncover the huge conspiracy hidden behind the hospital and campus is unknown.
