Warning : SPOILERS below forJustice League !

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InJustice League , the team unify to arrest Steppenwolf - but what precisely was is his plan and what were the Mother Boxes actually doing ?

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The World ’s Greatest Superheroes did n’t   link up force for no reason;Justice Leaguehad to provide a suited challenge that would create a pauperism for Batman ( Ben Affleck ) , Wonder Woman ( Gal Gadot ) , The Flash ( Ezra Miller ) , Aquaman ( Jason Momoa ) , Cyborg ( Ray Fisher ) , and in the end Superman ( Henry Cavill ) himself to amount together . That outstanding foe , as foretold by Bruce Wayne ’s Knightmare and the ravings of Lex Luthor ( Jesse Eisenberg ) inBatman V Superman : Dawn of Justice , is the obtrude upon army from the planet Apokolips , led by a being known as the End of Worlds , Steppenwolf ( Ciarán Hinds ) .

STEPPENWOLF’S ORIGINAL INVASION

It turn out Steppenwolf , the elephantine axe - swinging general of Darkseid , the dark god of Apokolips , is no stranger to Earth . Not only has he been to our major planet before , he tried to overrun it and failed . Five thousand years ago , Steppenwolf traveled to Earth via Boom Tube , a portal that permit for interstellar and inter - dimensional travel . He bring with him legions of Parademons - the flying , insect - like shock troop of Apokolips that feed on the fright of their victims . Steppenwolf eventransformed humans into Parademonsto serve his needs .

Most significantly , Steppenwolf had with him three Mother Boxes ; advanced technology used by his wash of ancient hefty beings called the New Gods . When coalesce together in a process called ' the Unity ' , the Mother Boxes have the ability to terraform integral planet . Steppenwolf pray to the power of the Mother Boxes , with the finish   of conquering Earth and transforming it into a satellite monovular to the impassioned hellscape of Apokolips .

However , Earth also had defenders five thousand years ago . An alliance arise up to push Steppenwolf . The Amazons , lead by Queen Hippolyta ( Connie Nielsen ) and their greatest worldwide Antiope ( Robin Wright ) , the Atlanteans , the tribe of Man , the Greek idol led by Zeus , and even theGreen Lanternassigned to protect Earth ’s space sector 2814 meet Steppenwolf and Apokolips in the field of struggle . Many die , including the Lantern , but the defenders of Earth won and vex back Steppenwolf ’s forces , ostracize him and his Parademons .

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The three Mother Boxes were left behind . Knowing they had to be separated so that the Unity could be prevented , the Mother Boxes were part among the Amazons , the Atlanteans , and the tribes of Man . The Amazons kept their Mother Box on their hidden island of Themyscira . The Atlanteans impart theirs to Atlantis , deep in the ocean ’s depths . The Men inter theirs , hoping it would never be pick up and used . While the first two Mother Boxes remained safely contain in their secret locations over the Millennia , the third was unearthed by the British during World War I. By 2016 , it was in the possession of Dr. Silas Stone ( Joe Morton ) at STAR Labs . As we view inBatman V Superman , the Mother Box came live and graft itself onto the perish consistence of Silas ' son Victor , twist him into Cyborg .

STEPPENWOLF’S PLAN IN 2017

By 2017 , Parademons had begun breaching the dimensional barrier and go far on Earth to accumulate intel on the whereabouts of the Mother Boxes . When Superman die at the oddment ofBatman V Superman : Dawn of Justice , the Mother Boxes begin to awaken from 5,000 old age of quiescence because Superman being conk out destabilized the harmony of the world and left it without a protector . Batman encountered a Parademon scout in Gotham City , which finally exploded into green guck after a brief battle . This was the sign Batman demand that his Knightmare was about to come true and the invasion he fear was close at hand . He contacted Wonder Woman and together they begin enroll the heroes who would form the Justice League .

Meanwhile , the awakened Mother Boxes call Steppenwolf back to Earth to collect the Mother Boxes and complete the conquest he start five millennia ago . His first stop was Themyscira , where he and his Parademons attacked the Amazons and get the first Mother Box . Steppenwolf   next struck in Atlantis , ingest their   box despite the efforts of Aquaman and Mera ( Amber Heard ) . The Parademons then intrude on the Russian town which had an vacate atomic reactor . This would become Steppenwolf ’s base of operations for when he would attempt the Unity . The third Mother Box was harder to locate ; the Parademons abduct nearly a dozen STAR Labs scientist for Steppenwolf to interrogate . One of the scientists was Dr. Silas Stone , which draw Cyborg and the new - mould Justice League into direct conflict with Steppenwolf . Only Cyborg bonk the last Mother Box ’s secret location because he had hidden it himself .

Cyborg secured the Mother Box and bring it to the League , where Batman divulge he contrive to expend it to make for the dead Superman back to life . After exhuming Superman ’s body and bringing it to the Kryptonian ship , the Flash used his upper to create lightning , which combined with the Mother Box ’s power , would supercharge Superman and resurrect him . It go and Superman was reborn , but while the League seek to subordinate the confused Man of Steel , Steppenwolf Boom Tubed into Metropolis and steal his final piece of the puzzler .

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The Justice League pass over Steppenwolf to his fundament in Russia and   assail the Apokoliptians . With Superman joining the battle at last , the Justice League were able-bodied to make unnecessary the people of the town and also get the better of Steppenwolf . Cyborg and Superman together break the Mother Boxes apart , terminate the Unity . Meanwhile , Steppenwolf experience veneration for the first time when Superman ’s rank index overwhelm him and his battleaxe was destroy . Their hunger ignited by the concern emanating from Steppenwolf , the Parademons turned on their full general . As Steppenwolf fought off his own legions , they Boom Tubed away from Earth . The Justice League foil Steppenwolf ’s second - and hopefully last - intrusion of Earth .

Whether Steppenwolf ever deliver - or worse , Darkseid himself come to Earth to avenge   his lieutenant ’s nonstarter - is a question that may be answered in a futureJustice Leaguemovie .

NEXT:Justice League: What Happened To ‘Unite The Seven?’

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