Chapter Summaries

Gamma World began evacuating Tarielia World’s population, but an Anti-Gamma World Alliance fleet ambushed its transports before the relocation was complete. Gamma’s forces raised their shields and fought back as civilians and soldiers faced danger in orbit and on the planet.

• Gamma World sent expeditionary soldiers into Tarielia’s hive cities to persuade or compel residents to relocate, while some residents accepted and others demanded better terms.
• Aeldari pirates and other Anti-Gamma World Alliance forces, including Chaos and xenos factions, gathered to seize Gamma World’s long-range jump technology.
• The alliance fleet launched a surprise attack on Gamma World’s transports, vaporizing some ships in its opening volley and striking a Whisper Escort.
• Gamma World activated its Aether Phase Engines and shields, then returned fire with its Whisper Escorts as alarms warned troops on Tarielia to prepare for enemy attacks.
• The fighting focused on the opposing motherships while both fleets maneuvered to avoid Gamma World’s long-range lance strikes.

Gamma World activated the Spirit-Driving Dead Zone and deployed its expeditionary force to protect Tarelia’s evacuation while fighting the Chaos forces and the allied attackers. Eldar pirates breached a transport mothership, but Gamma World’s six-legged combat engines matched their speed and began trapping them.

• Kaz learned that Gamma World might strike Tarelia and was told to withdraw as Chaos ignited conflict in the underhive.
• Gamma World activated the Spirit-Driving Dead Zone and equipped its expeditionary force with soul-protection and Aether Phase protocols.
• Vulkan prepared to use the technology to fight the enemy while protecting Tarelia’s tens of billions of inhabitants.
• Ivri’s Eldar pirates struggled to damage Gamma World’s shielded fleet as the Dark Eldar leader Malekith avoided the fighting.
• The Eldar launched a boarding attack with melta devices and tore open a breach in Gamma World’s transport mothership.
• The Eldar advanced toward the fleet’s core, where six-legged combat engines matched their speed and made them realize they had been slowed.

Gamma World activated the Spirit-Driving Dead Zone, crippling Chaos forces and enabling its expeditionary troops to slaughter their weakened enemies. As the remaining fleets attempted to flee, Gamma World decided to turn the planet into a springboard for expansion and began positioning a base.

• Gamma World fired the Spirit-Driving Dead Zone from Energy Planet 1, cutting off most beings’ connection to the Warp and disrupting Chaos powers and machinery.
• Kaz witnessed Gamma World’s Space Marines use advanced stealth and combat technology to assassinate a Chaos commander while Gamma’s forces overwhelmed the weakened Chaos troops.
• Gamma World’s expeditionary forces killed Chaos warriors and banished a Greater Daemon as the Dead Zone left the attacking factions trapped and vulnerable.
• The pirate Eldar, Drukhari, and other Anti-Gamma Alliance fleets ordered their forces to flee, but Gamma World refused to let them escape unchallenged.
• Gamma World abandoned its plan to leave the planet and ordered construction of the Gravity Slingshot and positioning of a base to make the world a springboard for expansion.

Gamma World attacked Tarielia and demonstrated the Spirit-Driving Dead Zone, alarming Chaos forces and revealing the scale of its technological power. Oukekaosi reflected on the Necrons’ decline and chose to watch Gamma World’s people grow rather than pursue revenge.

• Gamma World bombarded Tarielia and used its Gravity Slingshot to send warships into the system, while the Spirit-Driving Dead Zone affected nearby worlds.
• A Chaos lord called for forces to destroy the Gamma Empire, and a warband feared Gamma World’s isolation, planet-stripping, and ability to counter Chaos.
• Gamma World planned to claim Tarielia’s hive worlds as an outer ring and a base for expanding deeper into the Milky Way.
• Oukekaosi raged that Gamma World had stolen Necron technology, then recognized that Necron infighting had helped its thieves grow powerful.
• Oukekaosi abandoned revenge and decided to watch whether Gamma World’s civilization would eventually meet the same fate as the Necrons.

Oukekaosi chose not to attack Gamma World and learned that the galaxy faced domination by Chaos or the Tyranids, while Gamma expanded its plans to build more Megastructure Synapse Condensers. Lion El'Jonson awoke after a peaceful vision, but he wanted to avoid returning to the Empire and its burdens.

• Oukekaosi decided that hatred would consume him and refrained from attacking Gamma World.
• An awakened Deathmark reported that Chaos had grown powerful, the current galactic dynasty was declining, and no successor ruler had appeared.
• Gamma World destroyed planets and mined their resources to construct more Megastructure Synapse Condensers for its many research projects.
• Lion El'Jonson awoke from a vision of a peaceful world where Astartes lived ordinary lives and played a ball game.
• Lion El'Jonson lay back down, hoping to avoid the Empire's affairs until the Emperor of the human empire had solved its problems.

Lion El'Jonson awoke on a barren planet and encountered a battle between Chaos forces and the Fallen Angels, former members of his Chapter. When the Fallen Angels recognized him as their Primarch, Lion acknowledged his return and faced the chance to make amends for the distrust that had divided them.

• Lion reflected on Caliban's destruction, his lost memories, and the mistakes his harshness had caused before sensing ships falling toward the planet.
• A Chaos fleet fleeing Gamma World collided with a Fallen Angels fleet, and both sides attacked, believing the other would strike first.
• The Chaos forces were driven down to the planet, where the Fallen Angels pursued and cornered them.
• A Chaos warrior tried to capture Lion as he emerged from a cave, but a Fallen Angels sergeant recognized the genetic bond and called him their father.
• Lion saw the Fallen Angels had abandoned the Dark Angels' emblem, reconsidered the secrecy and distrust he had fostered, and declared, "I have returned."

Lion El'Jonson rescued the Fallen Angels, forgave them, and reunited them with him as they fought Chaos together. After learning about the Imperium's dire state and the mysterious Primarch near Ultramar, Lion asked why the Fallen Angels had come to the world.

• Lion and the Fallen Angels turned from their reconciliation to fight the Chaos warriors, with Lion protecting them and the Angels fighting at his side.
• A Fallen Angel knelt before Lion and asked for forgiveness, and Lion forgave the group and invited them to keep fighting with him.
• Lion asked about the Imperium, and the Fallen Angels told him about the new rift near Ultramar, the missing Primarchs, Vulkan's fate, and the Emperor's Sword appearing in battle.
• After hearing about the unknown Primarch and Angron, Lion said he would deal with Angron if they met again.
• Lion asked why the Fallen Angels had come to the world, and they said they were investigating it.

Lion El'Jonson learned that the Gamma World was real and ordered the Fallen Angels to join him in clearing out Chaos forces, while Mortarion considered reports of the planet from the Plague Fortress. The chapter ended with Mortarion noting that his Death Guard warriors on the Gamma World had gone silent.

• Lion El'Jonson learned that the Anti-Gamma World Alliance had gathered around the Gamma World and recognized Utopia as a place he had visited before.
• Lion ordered the Fallen Angels to follow him and told them to gather their Chapter, then news of his return and forgiveness spread across the battlefield.
• Gorest received the news, ordered Luther to be told, and led the Fallen Angels in slaughtering Chaos forces as they prepared to serve Lion.
• Gorest reflected on the Gamma Empire, the upheaval surrounding the Gamma World, and the awakening of multiple Primarchs.
• Mortarion reviewed reports of the Gamma World, including signs of Grey Knights, the Legion of the Damned, and Warp science, and learned that his Death Guard there had lost contact.

Mortarion received orders from Abaddon and Nurgle concerning the Great Crusade and Gamma World, but chose not to go there himself. He sent Arubis to investigate, unaware that Nurgle feared Gamma World’s actions could have disastrous consequences across the universe.

• Mortarion learned that his subordinates on Gamma World were dead and received messages about Abaddon's Great Crusade and Nurgle's command to stay away from the world.
• Mortarion refused to join the Great Crusade or travel to Gamma World, but ordered Arubis to investigate it on his behalf.
• Nurgle's prohibition stemmed from his fear that Gamma World was doing something rebellious and that Mortarion might betray him.
• Arubis departed with a Nurgling, bypassed the Imperium's defenses around the Eye of Terror, and headed toward Gamma World.
• As Arubis entered a Warp route, shadowy Chaos armies moved through other Warp lanes and questioned what was happening on Gamma World.

A vast Warp storm stirred by the Four Gods severed parts of the Imperium from its Navigators and Astropaths while Abaddon's forces advanced on Cadia. As Imperial warnings were delayed by political infighting, a tithe fleet reached the region and encountered Chaos.

• Abaddon's Black Legion advanced toward Cadia to destroy its Blackstone Pylons, while the Imperium remained unaware of the coming assault.
• A tremendous Warp storm isolated Navigator families from the Imperium, and Navigators began risking their lives to carry warnings through it.
• Imperial factions tried to prepare for the crisis, but reports about the Curse of the Faithless, Blackstone fragments, and a missing tithe ship were delayed or weaponized in power struggles.
• A Navigator aboard a tithe fleet bound for Cadia detected a Warp storm that could last years or decades.
• The tithe fleet emerged near Cadia and found Chaos forces waiting there.

Chaos forces gathered as the Warp storms isolated Imperial fleets and drew Perturabo toward a renewed war with the Imperial Fists, while the Salamanders recovered Vulkan’s sacred Fire Dragon Codex. In the Gamma Empire, researchers in Ozrax developed a weapon intended to destroy Chaos creatures, though their C’tan shard was already struggling to supply enough power.

• Tax Officer Michel activated the Oklig Execution Plan, sending light transports in several directions while the tithe fleet drew enemy fire.
• The Salamanders’ Second Company returned Vulkan’s Fire Dragon Codex to their ravaged homeworld, treating its recovery as a sign that Vulkan’s return was near.
• Perturabo mobilized the Iron Warriors for Abaddon’s war and focused on attacking the Imperial Fists, who were guarding Cadia.
• Ozrax researchers demonstrated psychic techniques that transformed matter and explained them as applications of physical phenomena.
• Chris and the other researchers learned that the Ozrax laboratory had developed a weapon to break down Chaos creatures using research informed by Necron technology.
• The researchers revealed that their C’tan shard’s output had become unstable after powering several megastructure weapons and Forge Worlds.

Gamma World's Chiefs and Governors observed a psychic laboratory where scientists demonstrated the Warp Aggregation Beam, a device intended to manipulate souls. The beam extracted a purple sphere from a Chaos captive, leaving the experiment's outcome unresolved.

• Gamma's scientists dismissed a C'tan fragment as a poor energy source and described plans to investigate other power sources.
• The scientists showed the visitors imprisoned daemons and Chaos soldiers whose connection to the Warp had been severed.
• The scientists presented the Lilliput Laboratory, where enlarged experimental culture dishes held captive Chaos creatures.
• A researcher explained that resurrecting the Old Ones had shown Gamma World how to manipulate souls.
• The operator fired the Warp Aggregation Beam at a Chaos captive, drawing a purple sphere from its body.

Gamma scientists demonstrated weapons that extracted Chaos warriors’ souls and turned them into ammunition capable of reproducing their mutations. They proposed testing the weapons in combat and raised the possibility that a soul defined by pure loyalty might produce a different kind of bullet.

• Gamma scientists used Gauss Disintegration and aggregation beams to break down dying Chaos warriors while collecting their souls in floating purple spheres.
• The scientists fired soul bullets at fleeing Chaos warriors and observed that the targets developed mutations identical to those of the souls fused into the ammunition.
• Mengjie explained that failed Chaos blessings made the strongest bullets, with hits carrying a ninety-nine percent chance of reproducing the blessing’s effects in the target.
• A scientist asked whether a soul of extreme loyalty and faith could create a bullet that countered an enemy’s corruption, and Mengjie recalled that they had an exceptionally loyal specimen from Is III.
• Mengjie asked the Governor, Brown, and the other chiefs to approve a pilot deployment so the scientists could collect battlefield data and refine the weapons.

Cisrain and the Chief Council approved a battlefield test of new weapons against the Anti-Gamma Alliance on Planet Kandel, sending forces from the First and Third Armies. Royce received an assignment to eliminate enemy lifeforms in Area 13 as the operation began.

• Cisrain’s group chose a battlefield roughly a hundred light-years from Gamma World to test weapons against Chaos and xenos forces.
• The Emperor ordered Cisrain to close the Tamosa Sector Blackstone and send Krieg, while Gamma World prepared for the threat posed by Abaddon the Despoiler and the Blackstone Fortress.
• Cisrain ordered parts of the First Army and Third Army to join the experiment, and Sigismund sent warriors from the First Army’s Second Company.
• The Ozrax laboratories and Karamat Arsenal developed and produced the equipment rapidly, and the military prepared an operation against an Anti-Gamma Alliance-held planet.
• Royce received a mission to eliminate an estimated 3,745 enemy lifeforms in Area 13 beneath Ron’s Throne on Planet Kandel.

Gamma World's fleet arrived at the Alliance gathering site and sent its Expeditionary Force to test new weapons against Chaos forces and xenos. The battle became a one-sided slaughter, while the soldiers collected soul bullets and debated whether to leave some enemies alive.

• The Alliance's Chaos and xenos forces waited near Gamma World, where their growing disputes included Chaos forces using xenos for rituals.
• Gamma World's fleet and a Krieg tithe fleet arrived near the gathering site, and Gamma's Expeditionary Force deployed to the surface.
• Veterans directed the troops as Drop Pods landed, automated drones gathered intelligence, and Gamma's soldiers began clearing enemy positions.
• Gamma's advanced weapons disintegrated Chaos forces and xenos, while medics collected the resulting soul bullets.
• The soldiers found both purple and golden soul bullets and discussed keeping them for laboratory study.
• A soldier ordered the troops not to kill every enemy because they might need them later.

Gamma's forces completed a rapid battlefield test of their weapons and withdrew with experimental data. Meanwhile, Gamma World's Neutron Sweep Colossus weapon finished construction ahead of schedule, but Cisrain noted that the Imperium of Man was in serious trouble.

• Gamma's troops cleared most of the target areas, and researchers analyzed weapon malfunctions while collecting battlefield data.
• Gamma's commanders ordered a withdrawal and left some enemies alive for future weapons tests.
• Professor Mengjie and other researchers discussed Gamma World's ambitions, its missing Necron technology, and the need to develop its own power.
• Gamma's completed the Neutron Sweep Colossus weapon above Karamat and began its final testing phase.
• Cisrain reviewed the galactic situation and observed that the Imperium of Man was in a very bad position.

Ursarkar E. Creed faced growing Chaos activity near Cadia while the Imperial Military Administration Department delayed sending reinforcements amid fears of Astartes Chapters gathering. As Creed sought help from the Iron Hands, they had already learned that Chaos was targeting Cadia.

• Creed reviewed the worsening threat near Cadia and received a message saying reinforcements could not be dispatched yet.
• Creed shut off the message and condemned the Military Administration Department’s delays, while Cadia remained short of troops and supplies.
• A Cadian reassured Creed that Cadia would stand unbroken despite the approaching danger.
• Creed ordered an Astropath to contact the Iron Father of the Iron Hands and monitor Chaos’s movements.
• The Iron Hands, already fighting Chaos from Medusa, learned that their enemy’s target was Cadia.

Iron Father Stronos learned that Chaos was massing against Cadia while the Imperium faced threats across multiple fronts. When Abaddon’s fleet and a colossal Blackstone Fortress emerged near the Cadian Gate, Creed’s defenders moved to meet them as Cadia’s shields remained disabled.

• Iron Father Stronos considered why Chaos was targeting Cadia and kept the Iron Hands stationed near Medusa while sending forces to reinforce Cadia.
• Stronos received reports that Necrons had raided an arsenal and that Chaos had destroyed a star system with a terrifying weapon.
• Abaddon gathered all six Blackstone Fortresses, and three advanced toward Cadia through the Warp storms that obstructed Imperial reinforcements.
• Creed ordered repairs to Cadia’s planetary shield array and sent the Space Wolves Chapter and Cadian Shock Troops to guard the Cadian Gate.
• A Chaos vanguard fleet emerged near the Cadian Gate with a massive Blackstone Fortress, which overwhelmed the Space Wolves flagship’s fire with its purple radiance.

Abaddon’s Chaos forces attacked Cadia after the Space Wolves fleet and Cadian raiders failed to stop the Blackstone Fortress. Cadia’s partially repaired planetary shield survived the first blast, but Chaos began a massive ground invasion as the fortress continued threatening the planet.

• The Blackstone Fortress destroyed the Space Wolves fleet and overwhelmed the Cadian raiding force before their warriors could stop it.
• Creed learned the planetary defenses were still unrepaired, while Tech-Priest Angus estimated he needed three days to finish the work.
• The Blackstone Fortress fired on Cadia, but the partially restored planetary matrix activated and shielded the planet from the blast.
• Abaddon rallied his forces and ordered them to destroy Cadia, declaring that he would achieve what Horus had failed to do.
• Chaos forces descended in vast numbers, attacking the loyalist lines while cultists performed rituals that weakened the boundary between the Warp and realspace.
• On Gamma World, Gamma planned a new resurrection project for a difficult-to-resurrect Ancient One.

As Cadia faced imminent destruction, Gamma World decided to launch an expedition to aid the Imperium and seize a Blackstone Fortress. Cisrain ordered the force to set out under Malcador and Sigismund, then stunned Sigismund by assigning eighty thousand expeditionary troops.

• Abaddon believed Cadia was doomed and continued the Black Crusade, convinced the Black Legion could no longer turn back.
• Koro argued that Gamma World had to delay Cadia's fall to protect itself, while Brown identified capturing a Blackstone Fortress as the expedition's true goal.
• Malcador volunteered to represent Gamma, and Sigismund volunteered to command its forces in the war.
• Cisrain ordered Gamma World to launch an expedition to Cadia, despite the risks of a long-distance transit.
• Sigismund requested ten thousand troops to reclaim a Blackstone Fortress, but Cisrain assigned him eighty thousand.