The Justice League combats the ultra-powerful A.I. Brother Eye system while struggling to fend off the apocalypse. It picks up right where the post-credits scene of "Batwoman & Nightwing 4" leaves off, with Supergirl (called in by Batman as a last ditch effort to save the world) confronts Brother Eye system, and Batman for creating it in the first place. The superhero community turns on Batman, with only a few standing by his side. Bruce Wayne retreats into the solitude of his Manor and drinks himself nearly to death. Meanwhile, a mysterious figure claiming to be Lex Luthor's son appears, with a vendetta against superheroes and takes control of Brother Eye, directing it to destroy the JL headquarters. Then, "Alexander Luthor", who claims he is from the same dimension as Power Girl and has been laying low, says he wants to perfect his dying world by using Brother Eye to steal all the energy from this one, mainly from superheroes, to transfer to his. He goes overboard and begins to drain the world of its life force. With JL members falling left and right and the world itself under siege from Brother Eye's satellite de-powering system, it will take everything from a our heroes and a guilt-ridden Batman to even stand a chance.
