Lacey (Bryce Dallas Howard) lives in a world that values personal ratings very much. In this world, you can score everyone you meet. The higher your score, the higher the weight of the score you give to others. Everyone's score determines what kind of life they can live. Cooper (Wyatt Russell) is a young man who likes to travel around the world. Once, he participated in a game test with tight travel expenses. Unexpectedly, this well-paid job brought a devastating blow to his life. The introverted boy Kenny (Alex Lawther) found that his every move was monitored by others. In order to keep the secret from being leaked, Kenny became a puppet manipulated by hackers. In the beautiful San Junipero, the introverted and ordinary girl Yorkshire (Mackenzie Davis) met the radiant Kelly (Gugu Mbatha-Raw), and a beautiful relationship was produced between the two. What is the real enemy that the soldiers who have been implanted with the "perception closed system" are fighting against? The notorious writer died inexplicably, and in the process of investigating the truth of the incident, the police gradually fell into the trap created by the hacker.