Meet the Extremists—self-declared deliverers from another Earth, they hunger for peace, thriving and add up to accommodation to the will of their pioneer, Lord Havok! By what means can the recently gathered JLA stop this gathering of confused lunatics before the Extremists release their own interesting—also perilous!— brand of peace on our riotous world? Trusting saints to be dangers to the survival of any world, Lord Havok and the Extremists have effectively killed the mightiest legends from their home measurement. To spare our Earth they’d murder thousands all the more, beginning with the recently shaped JLA. Be that as it may, eye-to-eye, are Havok’s and Batman’s objectives that extraordinary? Billions of lives rely upon the appropriate response.