This serial deals with the attempt of a master detective, a man of science, to overcome an equally brilliant inventor who is a criminal and whose warped mind caused him to seek to overthrow society, his genius making him the leader of a band of anarchists. The action hinges on the fight of these two for the possession of a secret invention by which radio messages may be recalled from the air. The success of the criminal right at the start succeeds in nearly electrocuting the detective so that he has only a few months to live.