Justice League: Crisis on Infinite Earths - Part Two (2024) Timeline Explained – Every Event in Order

Dr. Anthony Ivo was dying from a catastrophic disease that was accelerating his aging, a consequence of his own creations including Amazo. When Barry learned that Ivo had created Amazo to harness metahuman powers in hopes of extending human life, Ivo made the ultimate sacrifice to strip Amazo of its powers, effectively ending the threat the android posed while freeing himself from his own creation's burden.

• dr anthony ivo
• amazo
• sacrifice
• metahuman powers

Batman uncovered that Lex Luthor had intentionally infected Dr. Ivo with the disease that was killing him, driving Ivo to continue his research desperately. Luthor then reprogrammed Amazo's functions to target all non-human beings, using the android to attack the Justice League during their press conference. However, when Ivo sacrificed himself to strip Amazo's powers, the android turned against Luthor, returning the stolen powers and causing Luthor to be caught by authorities.

• lex luthor
• amazo
• batman
• justice league
• hack

Barry was sent to Earth-3 by Constantine, where he encountered his doppelgänger Johnny Quick. After being captured by the Crime Syndicate and taken to the Hall of Crime, Barry faced extinction when an anti-matter wave threatened to destroy Earth-3. Johnny Quick sacrificed himself to empower Barry with his speed abilities, giving Barry the chance to escape before the world was annihilated by the wave.

• earth-3
• johnny quick
• crime syndicate
• anti-matter wave
• sacrifice

Harbinger, the mysterious entity who summoned heroes to warn them of the anti-matter wave, revealed her true identity as Supergirl to the gathered heroes. This revelation came during the celebration after the wave was seemingly dissipated, leading her to question whether their actions had inadvertently altered the fabric of reality.

• harbinger
• supergirl
• multiverse
• identity

Barry used his extraordinary speed abilities to slow down time for himself and Iris, allowing them to age together while working on completing the vibrational tower on Earth-1. This desperate measure was necessary because the anti-matter wave was spreading rapidly and time was running short. The tower required Barry's speed to complete its construction before the wave arrived.

• barry allen
• aging
• vibrational tower
• time
• speed force

The Monitor, an ancient force controlling the multiverse, gathered heroes and warned them of a catastrophic anti-matter wave threatening to obliterate entire universes. He planned to build vibrational towers on the remaining Earths that would allow them to phase through the impending calamity, using Barry's time-travel abilities to execute this complex solution across multiple Earths.

• monitor
• vibrational towers
• anti-matter
• multiverse
• phase

The Spectre appeared after the vibrational tower network was activated and asserted that Barry bore responsibility for the unfolding chaos. However, the Spectre left Barry's fate at the mercy of the Speed Force, suggesting that Barry's actions, particularly his time manipulation and the use of the cosmic treadmill, had unintended consequences that contributed to the crisis, even though his intentions were to save the multiverse.

• spectre
• barry allen
• speed force
• responsibility
• chaos

After the tower network was activated, Barry vanished into the ether. He later materialized as a spectral vision to Batman, who was trapped in an illusion on Warworld created by the Warlord. The ghostly Barry urged Batman to return to a point before "the beginning," leaving only echoes of his message behind, suggesting his fate was intertwined with the Speed Force and time itself.

• barry allen
• batman
• warworld
• speed force
• vision

During the celebration after the anti-matter wave was dissipated, the Legion of Super-Heroes faded into nonexistence before Supergirl's eyes. This suggested that their actions to save the multiverse may have inadvertently altered the very fabric of reality, causing certain timelines or beings to cease existing entirely.

Foreshadowing: The Monitor warned that the anti-matter wave threatened to obliterate entire universes, and the heroes' solution may have had unintended consequences.

• legion of super-heroes
• supergirl
• nonexistence
• reality
• timeline

Barry used the cosmic treadmill's power to activate the tower network, which generated an energy surge that annihilated Barry's tower and Amazo. This unexpected energy surge allowed the anti-matter wave to pass through the various Earths, dissipating its destructive potential rather than destroying it outright. The victory came at a great personal cost, with elderly Iris dying and Barry's fate left uncertain.

Foreshadowing: The Monitor's plan involved vibrational towers on remaining Earths to phase through the wave.

• anti-matter wave
• cosmic treadmill
• vibrational tower
• energy surge
• dissipate