Beneath its idyllic surface, the futuristic, utopian domed city of Romdo is not all that it seems. Even in seemingly impenetrable perfection, the human spirit cannot be contained and evil cannot be restrained. Faced with demons both metaphysical and corporeal Re-l Mayer, a female detective who works for the Civilian Intelligence Office, must uncover the truths behind Romdo's secrets in Ergo Proxy.