Dawn the morning of the winter solstice, Yang Yuan's nine-year-old son disappeared in the stairwell without a trace. The police found that he had sneaked into a neighbor's house moments before his disappearance. However, the suspected neighbor has a solid alibi. It was almost as if this is a controlled escape room game. On the other side of the unit, Yuan Wu's father died suddenly after drinking. In order to fraudulently claim his pension, Yuan Wu decides to hide his father's body in a rented house, which caused him to encounter the fear of intertwining hallucinations and reality. Six months ago, Lin Chuping, a single, independent woman, woke up in her own home to find that she had been sexually assaulted in her sleep. Yet there is no trace of the perpetrator except for an ether handkerchief left on the windowsill...... These seemingly unrelated people, overlap each other in different time and space, beginning again in this moment.........