In the "era of panoramic recording", everyone is implanted with a "life core" since birth, and their lifetime memories are completely recorded, which can be viewed by relatives, friends and even the public after death. As a result, society has become "absolutely transparent", the crime rate has plummeted, and lies have almost disappeared. However, Kay Walker is a rare "blank" who refuses to be implanted with a chip due to childhood trauma and paranoia about privacy.
When a perfect murder occurs that shocks society, and all digital evidence strangely points to Kay, he is in a desperate situation. In a world that relies on memory evidence to decide a case, without a chip, his "alibi" itself cannot be proven. Arrested by the police and put on trial by the public, Kai must use the loopholes in this transparent system and the most primitive human observation and reasoning to uncover the truth of the case with the help of a group of unexpected allies. This is not only a struggle to clear one's grievances, but also a profound interrogation of the social nature of "absolute transparency", the authenticity of memory, and human nature itself: When everyone is watching, is the truth necessarily clear?
