On a campus that seems peaceful on the surface, student Lin Yu is unexpectedly caught up in a mysterious hospital kidnapping. He is certain he witnessed an abduction, but the police find no evidence, and he is diagnosed with "persecutory delusions." Back at his apartment, signs that the lock has been forcibly pried open and inexplicable bruised fingerprints on the back of his neck leave him baffled. Chen Feng, a doctor at the hospital, and Liu Yong, a security guard, both act strangely and deliberately avoid him. Lin Yu faces a difficult choice: trust himself and keep investigating, or listen to everyone who thinks he is mentally ill and give up. If he can't uncover the truth soon, he may be locked away as a mental patient or even silenced by the villains. As he deals with people connected to the hospital, trust keeps breaking down and relationships gradually deteriorate. Even if he eventually uncovers the truth, he may still have to pay the bitter price of being betrayed by someone he trusts. Can Lin Yu break through his predicament and expose the huge conspiracy hidden behind the hospital and campus? Everything remains unknown.
