Chapter Summaries

Angron returned to Terra with an overwhelming Daemon army and attacked Lion’s Gate, driven by memories of his enslavement and the gladiator family he had lost on Nuceria. Valerian’s undermanned defenders could not hold the gate, and the Daemons flooded into the Outer Palace.

• Angron arrived on Terra with eighty-eight Greater Daemons of Khorne and led their assault toward Lion’s Gate.
• Angron remembered his childhood as a gladiator, the Butcher’s Nails, and his life with the Nucerian rebels he considered his brothers and sisters.
• Angron recalled how the Emperor had taken him from his companions before their final battle, leaving him to become a servant of the Blood God.
• Valerian landed on Lion’s Gate, ordered the soldiers to hold their positions, and faced the approaching Daemon army.
• Lion’s Gate fell within an hour because its garrison had been depleted, and Daemons poured into the Imperium’s Outer Palace.

Valerian and the defenders lost Lion's Gate and struggled to hold the Outer Palace as Angron and the Daemons overwhelmed Terra. Guilliman arrived with a vast army, destroyed a Greater Daemon, defeated Angron, and ordered the Imperium's forces to kill the invaders.

• Angron and the Daemons breached Lion's Gate, and Valerian fought alongside the Grey Knights and Sisters of Silence to defend the Outer Palace.
• Valerian and his allies killed a Greater Daemon of Khorne, but Valerian was badly wounded as the defenders suffered heavy losses.
• Marshal Valano and the remaining defenders failed to stop Angron, while Valerian was evacuated from the battlefield.
• A sacred hymn heralded Guilliman's arrival with Primaris Space Marines, Astra Militarum, tanks, and Knight Titans, who turned the tide against the Daemons.
• Guilliman slew a Greater Daemon with the Emperor's Sword and fought Angron, taunting him about his past and his enslaved gladiator companions.
• Guilliman broke Angron's body, forced him to kneel, and ordered the Imperium's forces to kill the invading monsters.

Guilliman reclaimed Terra, executed Angron, and entered the Throne Room to ask the Emperor for Webway knowledge. The Emperor answered with fragmented memories pointing Guilliman toward Mars, the mysterious Dungeon, and Mordo’s forgotten altar.

• Guilliman led the Imperial forces in crushing the Daemons and rioters, while the Emperor’s power and The Beacon weakened the Blood God’s domain.
• Guilliman publicly executed Angron, ordered his corpse displayed, and left the battlefield to travel to the Throne Chamber.
• During the journey, Guilliman unlocked the second-stage Database and reviewed knowledge that could support projects such as the Warp Firewall and Webway construction.
• Guilliman entered the Throne Room, saw the Emperor sustained by the Golden Throne and the souls of Psykers, and asked Him for the Webway’s technical knowledge.
• The Emperor overwhelmed Guilliman with voices and memories, then directed him to Mars, the mysterious Dungeon, and Mordo’s forgotten altar before Guilliman left.

After speaking with the Emperor, Guilliman emerged from the Throne Chamber with the Emperor's recognition of his rule and clues pointing him toward Mordo and Mars. As he began restoring Terra and hearing its survivors' grievances, Hastar uncovered evidence that Tirean had been murdered, while civilians endured harsh inspections and displacement.

• Valano told Guilliman that six hours had passed during his conversation with the Emperor, and Guilliman addressed Terra's believers before leaving to inspect the damaged city.
• Guilliman concluded that he needed to investigate Mordo and Mars for answers about reviving the Primarchs and obtaining Webway technology.
• Guilliman toured a survivor camp, ordered food distributed, and promised to hear the civilians' complaints and deliver justice for abuses by officials.
• Hastar found Tirean's servant in a hidden dungeon, heard him say that his master had been murdered, and ordered him protected while Hastar sought an audience with Guilliman.
• Quimbis passed Terra's contamination screening, received relief vouchers and a work assignment, and heard Imperial news praising Guilliman as he traveled to his new residential district.

Quimbis endured abuse under a corrupt Arbites officer as Guilliman confronted Terra’s systemic oppression and prepared to purge its rulers. After Hastar exposed the High Lords’ murder of Imperial Chancellor Tirean, Guilliman ordered an investigation, while Angron set out to confront Lorgar over the souls of the Nucerian gladiators; Yittu and other High Lords then plotted how to survive Guilliman’s reforms.

• Quimbis and the other inspected survivors were sent to Level Seven, where an Arbites officer denied them food, beat Quimbis, and slapped a hungry girl before forcing them to work.
• Guilliman told Valano that the Imperium’s rulers had turned their people’s lives into hell and declared that he would purge Terra’s bureaucracy and remake the Senatorum Imperialis.
• Hastar showed Guilliman memory footage proving that Yittu and his accomplices had murdered Tirean, and Guilliman authorized Hastar to investigate the High Lords and military officers involved.
• Guilliman ordered Valano to send Custodes to Pluto to protect several people and capture assassins, insisting that the Custodes must obey his plans for confronting the Warp.
• Angron escaped Khorne’s gladiatorial pit and headed to find Lorgar, determined to punish him if he had enslaved the souls of the Nucerian gladiators.
• Yittu, Danda, Draco, and Merada discussed surrendering some power and accepting blame while preserving their families’ influence, believing the political system would eventually return to their control.

Guilliman appointed Penny as Imperial Chancellor and outlined sweeping reforms that would abolish the Senatorum Imperialis, dismantle entrenched powers, and place Terra under his centralized rule. As he prepared to enforce the changes with overwhelming military strength, Cawl and Kren pressured the Adeptus Mechanicus to accept reforms and preserve its place in the Imperium.

• The High Lords agreed to resign at the next General Senate Meeting, surrender family wealth, and cooperate with Guilliman's reforms in exchange for sending core family members away from Terra.
• Guilliman appointed Penny Imperial Chancellor and told her he would abolish the Senatorum Imperialis, replace hereditary rule with elected representation, restructure commerce and the armed forces, and purge obstructive officials.
• Guilliman assured Penny that Terra's forces, six fleets, and more than thirty thousand Primaris Space Marines were ready to enforce his reforms, and Penny accepted the appointment.
• Cawl and Kren argued with Conservative Faction Tech-Priests that Guilliman's technologies had advanced the Adeptus Mechanicus and that Mars could be replaced if it refused to compromise.
• Cawl and Kren presented the Wrath Colossus, new warships, the Human Beacon, and the God-Brain Project as evidence of progress, then urged the Tech-Priests to accept Guilliman's terms and continue serving the Omnissiah.

Cawl secured the Adeptus Mechanicus’s support for Guilliman’s reforms, while Calgar negotiated changes with the Space Marine Chapters. Guilliman abolished the Senatorum Imperialis, seized control of the Imperium, and ordered the arrest of the High Lords; as Laski was removed as Fabricator General, he aimed his Melta Gun at Guilliman and other leaders.

• Cawl persuaded nearly three-quarters of the Magos to support Guilliman’s reforms, and the Council of Magos agreed to depose Laski.
• Calgar and the Chapter representatives negotiated reforms to strengthen Terra’s control over the Space Marines and update outdated rules.
• Guilliman announced the abolition of the Senatorum Imperialis and declared sweeping political, economic, and military reforms that placed power in his hands.
• Guilliman exposed the High Lords’ record and evidence linking them to Tirean’s murder, then ordered their detention and warned other nobles to cooperate.
• Cawl and Sigma told Laski that the Council of Magos had removed him as Fabricator General, and Laski aimed his Melta Gun at Guilliman and the other leaders.

Guilliman crushed Laski’s armed resistance, imposed sweeping reforms across Terra and Mars, and then entered the Dungeon to find the Void Dragon imprisoned beneath Olympus Mons. Cawl nearly died after perceiving the entity, but Guilliman stopped him, and a woman emerged from the darkness.

• Fadik disabled Laski’s systems and killed him after he threatened Guilliman, ending the crisis in the Senate hall.
• Guilliman abolished the Senatorum Imperialis, began purges and reforms across Terra, and authorized Kren’s God-Brain Project.
• Quimbis saw a corrupt Adeptus Arbites officer beat him and falsely claim credit after Quimbis stopped a gang member’s shooting spree.
• Laski’s faction abandoned armed resistance as reforms spread across Mars, and Guilliman entrusted Terra’s government to Penny.
• Guilliman led Cawl, Sicarius, and honor guards through a hidden passage into the Dungeon, where they discovered the Void Dragon’s prison.
• Cawl began to collapse after perceiving the Void Dragon, but Guilliman ordered him to delete his data before a woman emerged and warned Guilliman about his recklessness.

Guilliman met Dalia, the Perpetual guarding the Void Dragon, and learned the C’tan’s history and how the Emperor had imprisoned it on Mars. He negotiated with the Void Dragon for Webway knowledge in exchange for ten thousand sacrifices, then left the cave as Terra’s reconstruction continued.

• Dalia introduced herself as a Perpetual who had guarded the Void Dragon since the Martian civil war, and Guilliman told her the Emperor had defeated Horus.
• Guilliman touched the ancient book and saw memories of the C’tan, the Emperor’s defeat of the Void Dragon, and its imprisonment on Mars.
• Guilliman called to the Void Dragon and offered to free it in exchange for help with the Webway project; the Void Dragon demanded ten thousand sacrifices of flesh and blood.
• Guilliman accepted the price and told Dalia that the changed circumstances outside explained why he was willing to deal with the Void Dragon.
• Terra’s reconstruction advanced as the government restored factories, reshaped wastelands, and built climate regulators to make the planet self-sufficient and habitable.

Quimbis killed a House Escher enforcer and vowed to eliminate the family, while Guilliman learned about an imprisoned Abominable Intelligence and left Mars after arranging access to the Webway technology. On Terra, Bulava received a psychic vision of the crisis at Vigilant Star and urged that Guilliman be warned before the route to Imperium Nihilus was lost.

• Quimbis learned of House Escher’s abuses and, after failed reports, stabbed an enforcer and burned his body as the first step in his plan to kill the family.
• On Mars, Dalia showed Guilliman and his companions an imprisoned Abominable Intelligence and demonstrated its rapid self-replication.
• Guilliman told Dalia that he wanted an alliance with the Void Dragon to resist Chaos and the Necrons, and she let him leave by railcar while remaining behind.
• At the Court of Silence, Bulava received a Scarlet-class message from Vigilant Star and entered the Dream Realm with other high-ranking Astropaths to investigate.
• Bulava saw The Despoiler’s forces attacking Vigilant Star alongside Daemons and other enemies, learned the planet guarded a route to Imperium Nihilus, and ordered his servants to warn Guilliman.

Bulava warned the Imperial Regent that Vigilant Star faced a massive threat, while Zirodav recruited Quimbis into a secret organization after he assassinated House Escher. Quimbis accepted the Men in Black’s Thought Seal, pledging his life and soul to Imperial Regent Guilliman.

• Bulava recovered from the Dream Realm journey and urged his servants to summon the Imperial Regent, warning that Chaos and the Imperium’s Xenos enemies threatened Vigilant Star and Imperium Nihilus.
• Zirodav confronted Quimbis over his assassination of House Escher, and Quimbis defended his actions as an attempt to correct corruption the authorities had ignored.
• Zirodav offered Quimbis a place in a covert organization that would gather intelligence across the Imperium, and Quimbis agreed to serve the Primarch without recognition or reward.
• Zirodav brought Quimbis to a secret facility at the God-Brain Data Architecture Center and explained that the Thought Seal would bind his mind and soul to his mission.
• Quimbis accepted the Thought Seal and pledged eternal loyalty to Imperial Regent Guilliman as the machine began implantation.

After implanting Quimbis with the Thought Seal, Zirodav sent him into the darkness to protect the Primarch’s cause. Guilliman rejected self-aware artificial intelligence, ordered aid for Vigilant Star while concealing his true plans, and reached Mordo Star, where he entered the Warp in search of the secret behind the Primarchs and confronted a hooded figure resembling the Emperor.

• Zirodav watched Quimbis emerge from the Thought Seal implantation calm and resolved to serve the Primarch in secret.
• Guilliman asked the Assistant Spirit about the risks of intelligent technology and decided not to make self-aware artificial intelligence a mainstay of Imperial development.
• Penny told Guilliman that the Despoiler threatened Vigilant Star, and Guilliman authorized a mobilization while ordering Calgar to reinforce the world.
• Commander Shas and Tau'va led a T'au assault on Havus Planet, where Tau'va destroyed Imperial vehicles and killed their survivors.
• Guilliman reached Mordo Star with Cawl and Sicarius, opened the Emperor-sealed gateway with his blood, and followed a path through the Warp.
• Guilliman encountered a hooded figure resembling the Emperor and thrust his sword at him.

Guilliman forced Malcahede to serve him, then met the Emperor, who explained the Primarchs’ Warp origins and showed him a Chaos-corrupted universe as a warning of humanity’s fate. After learning how to awaken Lion and receiving a coordinate to another universe, Guilliman returned from the Warp vowing to slay the gods.

• Guilliman exposed the disguised Daemon, identified it as Malcahede, and forced it to swear eternal service under threat of annihilation.
• Guilliman asked Malcahede about the road and learned it could lead to the Pantheon, lost realms, and other universes.
• The Emperor appeared and explained that the Primarchs’ Warp essences came from humanity, while Chaos had seized the Warp domains of other races and turned them into prey.
• The Emperor showed Guilliman a universe ruined by Chaos and warned that the Imperium would suffer the same fate if Guilliman failed.
• The Emperor told Guilliman that Lion could be awakened in the Warp and gave him a coordinate leading to another universe already under attack by Chaos.
• Guilliman returned to the real universe after ordering Malcahede to gather intelligence, and he vowed to return with armies to slay the gods.

Guilliman returned from the depths of the Warp and ordered preparations to awaken Lion, while Tau'va's forces eliminated a squad of the Watchers Chapter on Havus Planet. Calgar completed his second Primaris upgrade as Abaddon prepared to attack Vigilant Star and vowed to defeat Guilliman.

• Sicarius and the others emerged from the unnatural darkness to find Guilliman missing, but Guilliman soon returned through the altered archway and said he was going to awaken Lion.
• Guilliman ordered the Grey Knights, a fleet, an Astra Militarum regiment, and a Wrath Colossus to guard Mordo and destroy the planet if necessary.
• Tau'va led elite Fire Caste warriors against the Space Marines in a factory on Havus Planet; after heavy losses, his forces killed the last member of the Watchers Chapter squad.
• Calgar completed his second Primaris upgrade aboard the Glory Laurel and demonstrated his new abilities before pledging to defend Vigilant Star.
• Abaddon tortured and killed a captured Loyalist Space Marine, then learned that Calgar and other Imperial forces were headed to Vigilant Star.
• Abaddon ordered the Star-Eater to report on the fighting and declared that he would kill Calgar and eventually defeat Guilliman.

Guilliman and the Dark Angels performed a ritual to enter Lion’s mind and awaken him from his millennia-long sleep. Lion confronted the pain of betrayal and despair, but Guilliman urged him to return and help rebuild the Imperium.

• Guilliman told Azrael that the Warp and the Emperor’s blood could awaken Lion, so Azrael and the Dark Watchers prepared a ritual and sealed The Rock against interference.
• The ritual sent Lion and the gathered Dark Angels into Lion’s mental realm, where they found him living as a young hunter on a world of giant Chaos-tainted beasts.
• Azrael’s group confronted Lion with his past, including Luther’s betrayal and the destruction of Caliban, and recruited him to guide them through the forest.
• When a giant beast attacked, Lion wielded Lion’s Wrath and awakened his Warp form, but he condemned his past deeds and insisted that everything had failed.
• Guilliman appeared in Lion’s mental realm and acknowledged the Primarchs’ mistakes, urging Lion to return and help put the Imperium on a better path.

Guilliman returned to realspace after speaking with Lion, and The Rock was swept away by the Warp as Lion awakened. On Havus, the T’au Empire defeated the Watchers Chapter before Lion arrived with the Dark Angels, setting the stage for a new clash over the planet.

• Guilliman urged Lion to help restore humanity, but the Dark Watchers pulled him from the Warp as Lion’s awakening stirred a dangerous storm; Guilliman left The Rock and ordered his fleet to return to Terra.
• Guilliman told Cawl to keep secret a plan to create Astartes without Primarchs, while Watchers commander Afelan prepared his last defenders to face the T’au invasion of Havus.
• Tau’va led the Fire Caste assault on the Watchers’ fortress, killed Afelan, and captured the stronghold as Lion’s awakened Rock emerged in the Havus system.
• Lion ordered the T’au to leave or be destroyed, while Commander Xia called for reinforcements and Tau’va prepared to fight the arriving Imperial fleet.
• Human nobles on Havus pledged loyalty to the Greater Good, and some ordered Imperial churches and statues torn down before the battle’s outcome was known.

The Rock and the Dark Angels crushed the T'au fleet and invaded Havus, while Lion uncovered that the Ethereals and the Greater Good concealed the supposedly extinct Rangdan. Lion recognized the threat and prepared to confront their return to the galaxy.

• Commander Xia rejected The Rock's demands, and the T'au fleet opened fire as the fortress advanced.
• Azrael fired The Rock's Planet-Killer Cannon, destroying the T'au flagship and breaking the fleet; Imperial forces then defeated the T'au on Havus.
• Andwar ordered Ecclesiarchy buildings and Imperial hero statues demolished, then learned the T'au had lost and was beaten by his former supporters.
• Tau'va and Lord A.She retreated with the surviving T'au into a Hive City and tried to hold off the Dark Angels until reinforcements arrived.
• Azrael and the Librarians interrogated a captured T'au commander, and Lion recognized the Ethereals as the Rangdan, a deceptive xenos race he had encountered during the Great Crusade.

Lion learned that the Rangdan Xenos had survived by posing as the T'au and ordered the Imperium to purge them, then set out to join the battle. As Imperial forces breached the Hive City's Void Shield, Tau'va led a desperate attack against a towering Space Marine commander.

• Lion recalled the devastating Rangdan wars and concluded that the T'au were tools of the surviving Rangdan Xenos.
• Lion ordered the Dark Angels to prepare for battle and left the hall to join the fighting.
• Tau'va watched the Imperium bombard the Hive City's upgraded Void Shield and acknowledged humanity's battlefield strength.
• Imperial forces bypassed the shield and stormed the Hive City, where Angels of the Emperor and Hover Tanks tore through the T'au defenders.
• Tau'va rallied surviving Fire Caste warriors to attack a tall, unhelmeted Space Marine commander with their Laser Blades.
• Tau'va and the Fire Caste warriors slashed at the commander as he advanced under the protection of his guards.

Lion defeated the T'au ambush, captured and killed Ethereal An'Sha, and discovered the Rangdan Xenos had developed a way to attack Primarchs through their minds. After extracting An'Sha's memories, Lion ordered the Exterminatus Protocol to prevent the Greater Good from spreading.

• Lion slaughtered the Fire Caste ambushers, broke Tau'va's weapon, and used his mind to extract information before tearing him apart.
• Lion and the Dark Angels advanced through the collapsing T'au defenses and surrounded Ethereal An'Sha.
• An'Sha revealed the T'au body's true nature as a black-light Xenos and trapped Lion in a psychic version of Caliban.
• Lion revealed his Warp form, crushed An'Sha's mind, and plundered his memories.
• Lion ordered the Exterminatus Protocol and declared that every race believing in the Greater Good must be eradicated.

Terra recovered under Guilliman’s reforms as Penny considered the Imperium’s renewed prospects and the immense work required to educate and unite its worlds. Aboard Macragge's Honour, Guilliman summoned Dominus Archmagos Cawl to plan a strategic fallback and ordered him to find a way to visit another universe.

• Terra’s environment and cities were restored, and Guilliman’s reforms brought renewed confidence to its citizens.
• Penny reflected on the end of the Senatorum Imperialis, Guilliman’s rule, and the challenges of extending education and technology throughout the Imperium.
• Guilliman’s fleet continued toward Terra after separating from The Rock.
• Guilliman summoned Dominus Archmagos Cawl to prepare a strategic fallback plan for the war against Chaos.
• Guilliman ordered Dominus Archmagos Cawl to assemble a team and find a way to visit another universe.