DA Harvey Dent is hideously scarred down one side, by an acid attack. The result is 2 personalities and 2 faces. Ideal qualifications for a politician you might think, but Two-face's only policy is vengeance on Batman. He teams up with Edward Nygma, a technical wizard who invents a brain-sucking TV and adopts the alto-ego of The Riddler. MEANWHILE ... in the circus, Dick Grayson witnesses his acrobat family plummet earthwards and get a taste for sawdust....