A horror story that takes place in an office. The film begins with a murder case that happened to a family. The company employees are mysteriously killed one after another, and the murderer remains unknown. Gao Yaxing will play the role of a female intern at the center of the incident. Hong Yuancan, the screenwriter of films such as "The Chaser", "The Yellow Sea", and "I Am a Murderer", will make his directorial debut this time.