Crisis on Multiple Earths #1

In "Crisis on Earth-One!" from *Crisis on Multiple Earths #1*, a cross-Earth criminal scheme unfolds when three villains from Earth-1 and three from Earth-2 conspire to commit crimes and vanish into the other's reality. With the Justice League of America trapped in their own headquarters by a mystical spell, they call upon the Justice Society of America to take their place—setting off a high-stakes clash of heroes across dimensions.

In "Crisis on Earth-Two!" from Crisis on Multiple Earths #1 (2021), the Justice League of America and the Justice Society of America find themselves caught in a cosmic trap, pitted against their foes on parallel Earths before being flung into space. With their worlds collapsing and their allies scattered, the heroes must fight their way free and confront the forces pulling the strings—before the multiverse itself unravels.

In "Crisis on Earth-Three!" from *Crisis on Multiple Earths* #1, the Crime Syndicate—tired of their reign on Earth-3—seek fresh prey after Ultraman’s accidental discovery of the JLA’s Earth, triggered by Green Kryptonite’s strange new powers. With the Justice League on the defensive, the Syndicate teleport them to their home world, where they hold the upper hand, then turn their sights on Earth-2 to eliminate the JSA and even the odds.

In "The Most Dangerous Earth of All!", the Justice Society of America is ambushed and trapped in an interdimensional prison by the Crime Syndicate, who use the name "Volthoom" to pull off the scheme. With Earth-2 in peril, the Justice League must fight the Syndicate on their home turf, turning the tide by forcing them to overextend—locking them between dimensions and freeing the JSA from their deadly trap.

In "Earth--Without a Justice League!", Johnny Thunder of Earth-1 seizes control of the Thunderbolt after his Earth-2 counterpart accidentally summons him across dimensions. With the power of the thunderbolt in his hands, he alters history by erasing the Justice League’s founding, setting off a chain of events that reshapes the heroic landscape.

In "Crisis on Earth-A!", the Justice Society of America faces off against the Lawless League and three monstrous entities born from the twisted legacy of Johnny Thunder of Earth-1. As the dust settles, a desperate plea for time to be undone leads to a final, quiet moment where the Thunderbolt halts Johnny just as he begins to wonder—again—about the existence of another version of himself.

When Blockbuster and Solomon Grundy begin swapping places between Earth-One and Earth-Two without warning, the sudden rift between the two worlds draws the attention of the Spectre, who uncovers a dire threat: the approaching Anti-Matter Man is tearing at the fabric of reality, and if not stopped, both Earths may be lost.

In "The Bridge Between Earths!" from Crisis on Multiple Earths #1 (2021), the Justice League and Justice Society face a cosmic crisis when an experimental space-warp machine—created by Ray Palmer’s assistant—tears open a rift between Earths. With the Anti-Matter Man threatening to consume both realities, Ray Palmer and the Spectre must work together to restore balance before the multiverse collapses.

In "The Super-Crisis That Struck Earth-Two!" from Crisis on Multiple Earths #1, the JSA faces an unexpected threat when four ordinary people on Earth-2, empowered by mysterious black matter from another universe, overwhelm them in battle. With the help of a young adult Robin and Johnny's T-Bolt, the JLA arrives—worn down and just as defeated—revealing the crisis is spreading. Together, the two teams must uncover the source of the black matter before it consumes both Earths.

In "The Negative Crisis on Earths One-Two!" from Crisis on Multiple Earths #1, the JLA and JSA join forces to confront the Black-Sphered Villains on Earth-2, where artificial black matter awakens dangerous powers in four heroes—powers that threaten to consume them. As the heroes struggle to maintain control, a surprising shift in their subconscious minds helps their allies uncover the key to breaking the villains' hold, revealing vulnerabilities that turn the tide.

When a mysterious Red Tornado crashes into a JSA meeting claiming to be the original, the heroes are thrown into confusion—especially since the real Ma Hunkle vanished just as suddenly as she arrived. As the JSA’s victories turn to fatal defeats, each time the Tornado intervenes, they’re forced to question whether he’s a savior or the source of their doom. With no choice, he turns to Earth-1, chasing a trail that leads to T.O. Morrow and a conspiracy that could unravel the very idea of heroism.

In "T. O. Morrow Kills the Justice League -- Today!" from Crisis on Multiple Earths #1, the brilliant but ruthless T. O. Morrow turns his attention to the Justice League, aiming to stop a catastrophic scheme involving a supercomputer that threatens to halt all of time. With the JSA already defeated on Earth-2, the revived JLA must confront Morrow’s latest bid for control before reality itself unravels.

In "Star Light, Star Bright — Death Star I See Tonight!", Starman warns the JSA of Aquarius, a fallen stellar entity drawn to the Cosmic Rod’s power. When Aquarius steals the rod and nearly destroys Earth-2, the heroes barely survive by shielding themselves in an energy bubble, while Red Tornado races to Earth-1 to rally the JLA.

In "Where Death Fears to Tread!", the JLA arrives to support the JSA in their battle against the enigmatic Aquarius, but as Fate and Green Lantern (Alan) struggle to maintain their energy bubble, Aquarius intervenes—saving them only to bend them to his will. With the heroes turned against one another, Starman’s growing power threatens to unleash a catastrophic blast, forcing a desperate choice when Black Canary is trapped by Green Arrow’s own weapon. Amid the chaos, Larry’s sudden awakening from control leads to a sacrifice that changes everything. The story unfolds with emotional weight and high-stakes heroism, as the teams must regroup and face Aquarius before it’s too late.

In "Peril of the Paired Planets," Red Tornado is taken by the enigmatic villain Creator2, whose mastery of vibrational energy sets off a chain of crises across Earth-1 and Earth-2. As the JSA and JLA face mirrored threats on their respective worlds, the fate of both realities hangs in the balance—each team must confront their doppelganger's unraveling before it's too late.

In "Where Valor Fails... Will Magic Triumph?", the surviving heroes of the JSA face off against the technologically dominant Creator2, turning to ancient magic as a last stand—only to find that even the most powerful science can be undone by forces beyond logic. As Red Tornado breaks free from control, the tide shifts in a battle where faith and fury collide.