In the mirror city "Zhongdu" perfectly managed by the AI "Sky Vault", Ling Chen, a top memory restorer, woke up from an "accident" and lost all his personal memories. He's told that his job is to repair the shattered memories of others, only to find that he loses access to the most critical archive - his own. A recurring memory fragment filled with desperate screams leads him to a mysterious girl. In order to find himself, Ling Chen must sneak into the city's deepest memory database and walk through a maze of data and lies. He gradually realizes that what he has lost may not just be his memory, but what he wants to find may be the cruel truth that can overturn this perfect city.
