Batman: Impostors

A warped variation of the Joker drug has caused those who use it to embrace anarchy and chaos. With riots cropping up throughout Gotham, the citizens are divided into two gangs: one led by a Batman imposter trying to bring law and order back to the streets, the other by a Joker imposter out to punish the innocent and set Gotham ablaze. Can the real Batman stop an entire city?