The Flash travels in time to fix something that happened in the past, but ends up creating a parallel reality, where the Justice League does not exist, Superman is missing and Wonder Woman and Aquaman are at war.
The world's finest heroes found the Justice League in order to stop an alien invasion of Earth.
Batman learns he has a violent, unruly pre-teen son, secretly raised by the terrorist group known as The League of Assassins.
Aquaman is forced to choose between the Justice League and Atlantis when Atlantean warriors invade Gotham City and Metropolis.
While Damian Wayne struggles to cope with Batman's no-killing rule, he soon starts to believe that his destiny lies within a secret society known as, The Court of Owls.
Batwoman intercepts a crowd of criminals in Gotham City that includes Electrocutioner, Tusk, Firefly (DC Comics), Killer Moth, and others. When a fight ensues, Batman arrives. They are confronted by the apparent leader of the criminals, a man called the Heretic, who detonates explosives planted within the facility. Batman flings Batwoman to safety and apparently perishes in the explosion.
The Justice League battle the Legion of Doom (Lex Luthor, Toymaster, Weather Wizard, Cheetah (comics) and Solomon Grundy (comics)). Weather Wizard flees when his comrades are beaten, but becomes possessed by the shade of Trigon (comics)'s minions. Damian Wayne (Damian Wayne) disobeys Batman orders to get civilians to safety, thinking he can help the Justice League fight the possessed Weather Wizard, and sets the Batwing to crash into Weather Wizard and explode, defeating him and forcing Trigon's shade to leave his body. Upset that there's no answer to this occurrence, and in order for his son to learn teamwork, Batman sends Robin to join the Teen Titans. Meanwhile, Trigon's minion possesses Superman, plaguing him with visions of demonic shadows.
Several days before the actual story begins, exorcist and con man John Constantine and Etrigan the Demon engage the Demons Three in a poker game for high-end stakes; Constantine offers his home, the House of Mystery#The House, as his part of the pool in exchange for a box of artifacts, including a chipped Dreamstone. When both parties are caught cheating, Constantine summons Etrigan — a demon forced to share a body with Jason Blood — to dispatch the demons. Afterwards, Blood reprimands Constantine for making him summon Etrigan, and the two part ways.
Five years ago, the original Teen Titans (consisting of Dick Grayson as Robin, Roy Harper (comics), Wally West, Beast Boy and Bumblebee (comics)) rescue Princess Starfire (Teen Titans) of planet Tamaran from her captors sent by her evil older jealous sister Blackfire (DC Comics) who had staged a coup and forcibly took the throne. As she is no longer able to return to her world, the Titans offer her a home on Earth as one of them.
When Amanda Waller is diagnosed with a terminal illness, she reassembles the Task Force X to retrieve a mystical black playing card called Get Out of Hell Free.
Superman has become a hero to the citizens of Metropolis (comics) while infuriating billionaire Lex Luthor, who considers the alien a threat to his city. In an attempt to kidnap the mayor, Intergang – armed with Apokolips technology, including the Mother Box – are foiled by Superman; he and the Justice League send the recovered devices to S.T.A.R. Labs for analysis. In an interview with the Daily Planet’s ace reporter Lois Lane, Superman presents the rocket that brought him to Earth from Krypton (comics) and its Eradicator (comics) to the world. Lois is in a relationship with fellow reporter Clark Kent who, unbeknownst to her, is Superman’s alter-ego. Despite meeting his parents Jonathan and Martha Kent, Lois remains apprehensive of Clark's secrecy. His reluctance to reveal his past makes Lois reconsider their relationship.
Six months following Superman's The Death of Superman (film) Doomsday (DC Comics), the world has been introduced to four new, different versions of the hero: Superboy (Kon-El), Steel (John Henry Irons), Cyborg Superman, and the Eradicator (comics). Each one of them is different in their personalities and crime-fighting style compared to the original Man of Steel; leaving the world questioning which one, if any, is the true Superman come back to life. Lois Lane, still reeling from Clark's death, decides to investigate.
The world’s greatest Super Heroes square off once-and-for-all against the despotic Darkseid – with the fate of all humanity hanging in the balance.
