A cataclysmic threat looms over the entire universe as the malevolent ruler Darkseid, relentless in his quest for dominance, launches an all-out war from his home world, Apokalips. Faced with the gravest threat they've ever encountered, the Justice League assembles for an epic showdown that will determine the fate of all existence. The battle takes them to the heart of darkness, where they must confront their deepest fears, forge unexpected alliances, to prevent Darkseid from getting the Anti-Life Equation.