In the bustling metropolis, Zhao Jingmin, a single woman who works for a bank, leads a nine-to-five life, shuttling alone through the streets and alleys of the city. One night, Jingmin returned home from get off work and found that the cover of the combination lock on her door had been opened. Shortly after entering the house, she suddenly heard the sound of pressing the combination lock at the door, and someone tried to turn the doorknob. Although she didn't see anyone, the panicked Jingmin chose to call the police, but the police refused to investigate further on the grounds that no intrusion or injury had occurred. As the night deepened, in an extremely abnormal deep sleep, it seemed that someone calmly walked into Jingmin's room and hugged the girl tightly to sleep. In the following days, Jingmin's mental state became worse and worse, and unreasonable customers made her panic. She began to become overwhelmed, and every man around her seemed to become extremely suspicious, and the terrible thing finally happened...