In a memory-implanted city called "Mirror City", the amnesiac "restorer" Lin Mo is forced to repair the broken memories of the powerful. During an unexpected mission, he glimpsed his erased past and a shocking conspiracy concerning the survival of the city. In order to find himself, he must escape from this gorgeous cage in the maze of true and false memories, and fight against the supreme artificial intelligence called "The Center" and the old enemies lurking in the shadows of the city.