A male psychological doctor is invited to handle a rooftop suicide, but before falling to his death, the deceased Qin Yulin proclaims that the world is fake. While claiming the body, the corpse's identity is bizarrely misplaced, and clues from his dreams successively appear in reality. The male lead investigates a cigarette butt, six strange drawings, and the 1984 old case, gradually uncovering the Observer Project and Observation Station 011. Until the screening records show a blank, he discovers that he is not an outsider, but a second-class observer once classified as high-risk.