In the future city "Mirror City" where neon lights and rain intersect, a man code-named "Zero" wakes up in a strange cell, and his memory is completely erased by a technology called "data weaving". He was rescued by the mysterious woman K and was forced to be involved in a deadly conspiracy against the "Morpheus Group", a giant company that controls memory technology. In order to find the answer to "Who am I?", "Zero" must use his remaining instinct to read micro-expressions to navigate through the fog that makes it difficult to distinguish between friend and foe. However, the closer he gets to the truth, the more he discovers that his lost past may be the nightmare he wants to escape from now.
