After Zhang Xin (Lin Jiaxin) learned that her landlord's wife and children died in a mudslide, she always saw their ghosts, which made her boyfriend unable to bear the torture and left her. In desperation, she sought help from psychologist Azan (Leslie Cheung). Azan knew clearly that what Zhang Xin saw was just a hallucination caused by long-term isolation, and began to do his best to help her, and finally helped her slowly get rid of all kinds of terrifying thoughts. The two gradually developed feelings in this process. When she was in Azan's living space, Zhang Xin found that Azan had many strange behaviors. After investigation, she found that he suffered from severe schizophrenia and was trapped by hallucinations at a certain time at night. In order to let her lover return to normal, Zhang Xin decided to help him get rid of the demons in his heart.