In order to save money, Lin Wan moved into an old peaceful apartment on the outskirts of the city, but was tortured by the dragging and whispering sounds coming from next door every night. She plucked up the courage to investigate and found out that the neighbor next door, {Su Rui}, had disappeared three years ago and was related to an unsolved case. Chen Mo, the criminal police officer in charge of the case, suspected Lin Wan of ulterior motives, but during the contact he discovered that she could sense fragments of the past through old objects in the apartment. The two were forced to cooperate and use old objects as clues to trace the truth. The seemingly kind apartment manager, Lao Zhao, always had an unknown coldness in his eyes. As the clues deepened, Lin Wan realized that she had been involved in a carefully hidden conspiracy, and the murderer might be around.
