Year Zero
Year Zero features The Joker escaping from Arkham Asylum and then breaking into Blackgate Prison to free Andre Chavard, whom he forces into helping him find an evil mystical amulet known as the Amulet of Apophis and using his grandson Stefan as leverage.
As the amulet had been buried in the past in the deepest part of the Mariana Trench by Alan Scott following World War II, Joker teams up with Black Manta to dive down into the trench to get the amulet. He then began using its powers to take control of members of the Justice Society and have them kill each other, resulting in the death of Jay Garrick.
Joker goes to Egypt where he excavates the Helmet of Chaos, becoming Doctor Chaos. Now immensely empowered by the chaos magic from both the helmet and the amulet, Joker attacks the Hall of Justice and easily defeats the heroes. Superman is possessed, but frees himself after Batman gets through to him and he destroys the Amulet of Apophis. The Joker takes this as a challenge to corrupt Superman following his defeat, leading to the events of Lois's death.
Year One
Year One features the Insurgency led by Batman against the Justice League led by Superman and the establishment of the One Earth Regime.
In Metropolis, a pregnant Lois Lane is kidnapped by Joker. While Superman searches for her, Batman and the Justice League deduce that Joker has used Scarecrow's fear toxin and laced it with stolen kryptonite to affect Superman. Superman and the League track Lois to a submarine where Joker and Harley Quinn are hiding, but Superman is attacked by Doomsday. He fights and defeats Doomsday, only to learn Doomsday is an illusion, and he has been fighting an unconscious Lois. Too late, he learns that Lois's heart was synced to a nuclear warhead, which detonates and destroys Metropolis when her heart stops. Blinded by grief and revenge, Superman kills Joker despite Green Lantern's and Batman's efforts to stop him.
A grieving Superman decides that all violence must end, by force if necessary. He addresses the United Nations, with Wonder Woman beside him, revealing his secret identity and demanding an immediate cessation of all worldwide hostilities. In response, the United States government contracts Mirror Master to kidnap Jonathan and Martha Kent to use as leverage against Superman. Using increasingly draconian measures, the League locates Mirror Master, and Superman relocates his parents to the Fortress of Solitude. The global escalation continues, with Wonder Woman becoming Superman's advisor as the League stops conflicts by force. Batman and Superman grow increasingly at odds, with Batman questioning Superman's and the League's methods.
In the Pacific Ocean, the League responds to a whaling ship under attack by Aquaman at the head of an Atlantean army. Tensions boil over into a full-scale battle until Superman coerces Aquaman into backing down, but not before Atlantean armies appear on multiple coastlines as a reminder of Atlantis's power. In response, Superman lifts Atlantis and places it in the Sahara Desert. Aquaman backs down, telling Wonder Woman that he is willing to advise Superman as a fellow ruler, but she does not relay the message. In Australia, Superman and Wonder Woman violently respond to a public demonstration against the League's new tactics, crippling a fan and wannabe hero named Galaxor. The Flash, also present, begins to doubt the League's mission.
Following the destruction of Metropolis, Harley Quinn escapes police custody but is recaptured by Green Arrow. He takes her to Arkham Asylum, where Superman, Wonder Woman, and Cyborg have also arrived to relocate the inmates to parts unknown. Batman and Nightwing arrive to stop them, but Robin (who believes in Superman's new crusade) switches sides to join Superman. In the ensuing fight, Robin accidentally kills Nightwing, the shock of which ends all hostilities and Batman, overcome with rage, disowns Robin as his son.
At Superman's private urging, Catwoman goes to Wayne Manor to console Bruce Wayne. She and Batman secretly meet with the President, who asks Batman to neutralize Superman. He begins building a team to oppose Superman's League—including Catwoman, Green Arrow, Aquaman, Black Canary, Black Lightning, Huntress, Captain Atom, and Batwoman. With the battle lines drawn, Superman's League continues its mission of stopping conflicts by force. Shazam forces Black Adam to give up his power but begins to doubt Superman's mission as a result.
Lex Luthor is found as the lone survivor in the ruins of Metropolis. He meets with Superman's League and wishes to join them, promising to recruit more members to Superman's side. Meanwhile, Batman's League kidnaps Hawkgirl and replaces her with Martian Manhunter, thereby gaining a spy in Superman's League.
On Apokolips, Kalibak hears of Superman's new role as Earth's protector and wishes to test him. He leads a Parademon invasion of Earth, coincidentally during a public relations event at which Superman and Lex Luthor hope to spread their message of public safety. Enraged, Superman kills Kalibak, who taunts him over his failure to save many innocent lives. Batman and Superman's teams band together to fend off the invasion, but all appears lost until Superman vaporizes the Parademons. Though the invasion is stopped at the cost of thousands of lives, Superman, nevertheless, is more popular than ever.
In the wake of the invasion, Superman and Luthor conceive plans to create an enhanced security force, loyal only to Superman, using drugs created with Kryptonian technology. Robin teleports to Wayne Manor, having secretly taken one of the prototype drugs. He confronts Batman, with Martian Manhunter having followed him. In the ensuing fight, in which Alfred is accidentally injured, Robin deduces Manhunter's identity. In response, Superman reveals Batman's identity as Bruce Wayne despite Batman's efforts to stop him. Superman, Wonder Woman, Green Lantern, and Flash journey to the Batcave, where Wonder Woman delivers an ultimatum to Batman: stand down, or the League will respond with force. Martian Manhunter confronts Wonder Woman, but Superman kills him with his heat vision.
Learning that Superman's enhancement drug is being manufactured at the Fortress of Solitude, Batman's team raids the Fortress to steal it. As a distraction, military forces engage in a build-up in the Pacific, but Superman is not long fooled by the ruse. Too late, Batman discovers Jonathan and Martha Kent at the Fortress and realizes that, if Superman discovers his team here, he will assume they have come for his parents and will respond with lethal force. Superman arrives, but Captain Atom fights him both on the orders of the Pentagon but also to give Batman's team time to get away—with the exception of Green Arrow, who is separated and trapped inside the Fortress. Wonder Woman slashes Captain Atom's suit with her sword, not realizing that this will render him unable to contain his energy.
Both Superman and Wonder Woman are injured in the ensuing blast, but Superman recovers quickly, now realizing that the US military tried to kill him and believing that Batman's team is trying to do the same. Returning to the Fortress, he confronts Green Arrow, who is with the Kents. After Green Arrow injures Jonathan with an arrow, Superman beats him to death, but not before Green Arrow delivers the prototype pill to Batman. The remaining members of Batman's team escape in a costly victory. An enraged Superman confronts Batman at the Batcave, where the Batcomputer is analyzing the pill. The two argue and fight, ending with Superman breaking Batman's back, but not before the analysis is completed, enabling Batman's Resistance to synthesize the drug. Finally, Alfred, who has taken the drug to gain temporary superpowers, intervenes and injures Superman, allowing him to rescue Batman. In the closing, Superman's League, including Luthor, addresses the United Nations, pledging an end to violence, "Whatever the cost."
Year Two
Year Two features Superman's fight against the Green Lantern Corps and Harley Quinn joining the Insurgency.
Green Arrow's funeral briefly brings together the rifted Justice League, but in its wake the League is more divided than ever. An injured Batman has been relocated to Doctor Fate's tower, which is located outside of space and thus safe from Superman. Oracle has taken charge of his resistance movement, recruiting other heroes (including Harley Quinn) to fight Superman and his supporters. Harley and Black Canary begin an odd friendship, with Harley becoming an unofficial aunt to Connor, son of Black Canary and Green Arrow.
Meanwhile, Superman's League continues its global crackdown under the guise of enforcing order, sending the Flash and Hal Jordan to intimidate Congress into averting a government shutdown. Wonder Woman remains incapacitated on Themyscira. The formation and brutal methods of Superman's security forces, created with the help of Lex Luthor, convinces James Gordon and many members of the Gotham City Police Department to join with Batman's resistance, thanks to Batman's reverse-engineered superpower pills.
En route to Earth, Green Lantern Kyle Rayner is ambushed and killed by Yellow Lanterns led by Sinestro, who joins Superman's regime as his advisor. The Guardians of the Universe dispatch Ganthet and Guy Gardner to investigate the situation on Earth.
Year Three
Year Three introduces magic users such as John Constantine, Zatanna, and Doctor Fate, who aid the Insurgency.
In a flashback, the Teen Titans are present during the explosion that destroyed Metropolis. Kid Flash and Beast Boy are killed, while Superboy, Starfire, Red Robin, and Wonder Girl confront Superman. The remaining Titans battle Superman to stop him from killing any further, but Superman sends them to the Phantom Zone. Shortly after the battle in Year Two, John Constantine learns that his daughter Rose has lost her mother. He takes Rose to the Tower of Fate to keep her safe, vowing revenge against Superman.
In the present, Batman recruits John Constantine, Doctor Occult, and Rose Psychic to take down Raven and Wonder Woman. Raven is defeated, but Occult is killed, and Rose dies after prolonging Wonder Woman's sleep. Having kidnapped Raven, the Insurgency gathers at Jason Blood's home. The Spectre
Year Four
Year Four introduces the Greek gods, revealing Ares' scheme to empower himself by escalating the conflict between the Regime and the Insurgency into a war by involving his fellow gods alongside enlisting the aid of Darkseid.
Tensions boil between Superman and his allies. Similarly, Batman's teammates are upset with his refusal to continue fighting. A superpowered Renee Montoya goes to Washington, D.C., where she threatens to kill Robin. Superman appears and fights Montoya, but she dies after taking too many of the superpower pills. Bruce Wayne arrives on the scene, and Superman tells him that the war is over. Harley Quinn kidnaps Billy Batson, while Lex Luthor helps Barbara Gordon to become Batgirl once more by administering a treatment that allows her to regain the use of her legs. Meanwhile, Ares and Hera voice their concern to Zeus that Superman has become a god amongst men. Hera sends the armies of Themyscira to the Hall of Justice to end Superman's rule, despite Wonder Woman being Superman's ally.
Batman, who had made an earlier deal with Ares, joins the armies of Themyscira. Wonder Woman proposes a trial by combat between the Gods and Superman's regime. Superman steps forward as the Regime's champion, while Batman chooses Wonder Woman to fight on behalf of the gods. Wonder Woman is forced to do so by Zeus, who claims that Queen Hippolyta will be killed by Hera if Wonder Woman does not honor the will of the gods. Superman and Wonder Woman begin their battle to the death, but Sinestro intervenes and shoots Wonder Woman down. Batman's insurgents and the armies of Themyscira, led by Artemis and Hermes, battle the Regime.
More of the Olympians arrive to defeat the Regime, but Ares frees Billy Batson, who turns into Shazam and joins the fight.
Year Five
Year Five sees a desperate last stand from Batman and Lex Luthor to establish a link to the Prime Universe Justice League and call them for help. The end of Year Five serves as the direct precursor to the game.
Prior to the occupation of the Olympians, Plastic Man's son Offspring was captured by the Justice League and imprisoned within the Trench. In an attempt to save his son, Plastic Man broke into the Trench and released nearly every prisoner inside. At the end of Year Four, a clone of Superman created by Lex Luthor escaped containment and was found by an elderly tailor who believed him to be Superman.
In the present, Superman orders the Justice League to round up the Green Lanterns, insurgents, and supervillains who were broken out of the Trench. Meanwhile, Hawkman arrives on Earth and tries to forcefully bring Hawkgirl back to Thanagar, but he is easily defeated by the Justice League. Batman recruits the Rogues, consisting of Weather Wizard, Heat Wave, Golden Glider, and Mirror Master. Doomsday comes to Earth and attacks Superman, but Bane defeats him and joins Superman's regime; Superman also kills Parasite by throwing him into the sun. Bane, Killer Frost, and Killer Croc capture Catwoman and torture her for information about Batman's whereabouts.
Batman, Batwoman, Harley Quinn, and Mirror Master confront Bane and Killer Frost at Wayne Manor
Ground Zero
Ground Zero retells the story of the video game from Harley Quinn's perspective.
Injustice 2 (comics)
The comics based on Injustice 2 take place between the events of Injustice: Gods Among Us and Injustice 2. The comics feature Batman's attempt to reform the society after the fall of the One Earth Regime, Ra's al Ghul's rise to power and his plans to save the world from ecological destruction, Hal Jordan's redemption after following Superman's Regime, and Gorilla Grodd seizing control of Gorilla City.
Injustice vs. Masters of the Universe
Injustice vs. Masters of the Universe takes place after the Injustice 2 ' s "Absolute Power" ending. The Insurgents find He-Man in hopes that he might stop Superman permanently. Superman attempts to employ Skeletor to restore his family to life. He then searches the multiverse to find a reality where they still live, only to learn that fate will not allow them to do so in any reality. After a clash with He-Man, Superman receives a fatal blast of lightning from He-Man and Castle Greyskull (Superman having a vulnerability to magic), then, in a redemptive moment with He-Man, dies. Batman forms a new Justice League in his son's honor.
