Chapter Summaries

Arthur’s forces defeated Luther’s Chaos-corrupted uprising on Caliban, and Arthur killed Luther after he asked why Arthur had only come now. Ramesses confirmed that their time-travel interference would not create paradoxes, leaving Arthur free to pursue his plan to move Caliban and its people, though another danger remained.

• Merian joined the Dark Angels’ assault on Luther’s forces as Arthur and Ramesses noticed that Nurgle’s ritual was progressing elsewhere.
• Arthur confronted Luther, whose forces were overwhelmed, and Luther reflected on how his choices and the powers of Chaos had led him to seek revenge.
• Arthur defeated and killed Luther, who lamented that Caliban’s corruption and destruction were already set in motion and asked why Arthur had only come now.
• Nurgle raged as Tzeentch watched the unexpected change to Luther’s fate, while Typhus sensed the Terminus Fleet moving faster.
• Arthur’s forces secured Luther’s Fortress, restrained Astelan, and killed the remaining Chaos-corrupted fighters.
• Ramesses explained that their time-travel actions created no grandfather paradoxes, confirmed Arthur could move Caliban and its people, and noted that Arthur still had trouble to face.

Arthur continued evacuating Caliban’s population and repairing its cities as he confronted Lion El'Jonson about his past failures and the First Legion’s problems. Lion began accepting Arthur’s guidance and joined the effort just as the enemy’s main fleet arrived and the hunt for the corrupted Ouroboros became urgent.

• Reconnaissance revealed that Chaos corruption covered much of Caliban, so Arthur organized the evacuation of nearly one hundred million people while engineering forces repaired cities and expanded spaceports.
• Ramesses mocked Lion El'Jonson over the First Legion’s failures, prompting Lion to question his record and endure the veterans’ amusement.
• Arthur acknowledged Lion’s military skill but explained how his fixation on being the Emperor’s executioner had deepened the First Legion’s internal divisions and neglected Caliban.
• Corswain refused to return to Lion’s command, and Lion chose not to force him, reflecting on his responsibilities and deciding to follow Arthur into battle.
• Azrael reported that the enemy’s main fleet had appeared at the Mandeville Point, and Arthur ordered the troops to move while civilian evacuations continued.
• Arthur ordered Caliban’s elevator shafts to triangulate the corrupted Ouroboros, which was shifting through the contaminated regions, and said they had to find it first.

Typhus’s forces fought the Dark Angels fleet as Lion El'Jonson led a boarding assault and killed Typhus. With Caliban overwhelmed by Nurgle’s forces and Ouroboros still hidden, Arthur decided to shatter the planet and pull its fragments through the rift; the War Council approved his plan.

• Typhus saw the Dark Angels fleet attack Caliban and ordered his forces to defend the Terminus Est.
• Lion El'Jonson and Corswain boarded the ship, fought through its defenders, and Lion killed Typhus with the Lion Sword.
• Lion ordered the boarding force to spread out and advance while the Dark Angels fleet attacked the Plague Fleet.
• Arthur asked Ramesses whether his actions would affect the future, then decided to shatter Caliban and use gravity-control systems to pull its fragments through the rift.
• Azrael and the War Council approved Arthur’s plan to destroy Caliban.

Lion El'Jonson helped direct the Dark Angels’ plan to break Caliban apart for transport through spacetime rifts while reflecting on how he had neglected the people he once protected. As Arthur activated the next stage of the operation at Angel's Citadel, Lion admitted he had been overthinking his rivalry with Arthur.

• Ramesses told Lion El'Jonson that Caliban's destruction and his disappearance were already part of the future, then challenged his refusal to seek better conditions for Caliban and the Dark Angels.
• Lion El'Jonson advised the forces preparing seismic bombs on how to fracture Caliban evenly, while the Dark Angels and their allies fought to secure the planetary fissures and evacuation routes.
• Lion El'Jonson aided troops defending refugees and met Balthasar, who was carrying a child to safety with the First Legion.
• Seeing Balthasar's troops protect civilians made Lion El'Jonson recall his former role as Caliban's guardian and question whether he had fulfilled his responsibilities as its ruler.
• Ramesses warned Lion El'Jonson to withdraw his people because Arthur was about to activate the next stage of the operation.
• A brilliant light rose from Angel's Citadel at Aldruk, and Lion El'Jonson watched it while admitting he had been overthinking his rivalry with Arthur.

Arthur destroyed Ouroboros with the power of a C'tan Shard as Caliban broke apart, while Lion El'Jonson learned how that power worked and was invited to join the others in the future. In the 40k timeline, Redloss faced pressure to travel forward with the Dark Angels and keep fighting beside the Lion.

• Arthur pursued Ouroboros through Caliban's crust and, after Ramesses confirmed the final test was complete, unleashed a beam that destroyed the creature and helped tear the planet apart.
• Lion El'Jonson read Aglaia's account of the battle and questioned Ramesses about whether he could wield the same C'tan Shard power.
• Ramesses explained that Lion El'Jonson could learn the energy formulas, then invited him to travel with the group to the future.
• Karna told Ramesses that Ultramar faced cult activity, a Hive Fleet, and Chaos threats, and Ramesses said they would deal with Mortarion together.
• In the future, Redloss saw the Dark Angels preparing to depart and objected, while Gallad and Kai urged him to join them so he could keep fighting beside the Lion.

Kai persuaded Redloss and the Dark Angels to retreat through the rift into the future with the Lion, while the fleet brought Caliban’s fragments and the Ouroboros along. The past remained unchanged, and the Lion rejoined Arthur after experiencing ten thousand years; the group began preparing Caliban’s restoration and their next mission.

• Redloss agreed to retreat after Kai urged him to join the Lion, and the Primaris veterans recorded the names of those returning to the future.
• The Lion chose to cross the rift with Arthur and Ramesses as the fleet withdrew, towing Caliban’s fragments and recovering the silent Ouroboros.
• The fleet and its people endured temporal changes as they entered the future, while the Dark Angels lived through ten thousand years in an instant and remained alive.
• Redloss awoke knowing how he had died, then contacted the Lion, who was aboard the Silent Vow undergoing his ten-thousand-year trial.
• The Lion solidified, reunited with Arthur, and learned that the Legion was well as the fleet began plans to rebuild Caliban and support Ultramar.
• Tzeentch smashed his mirror after the return to the future left history unchanged, while Nurgle laughed at his rival’s disappointment.

As Arthur and Ramesses restored Caliban, the Warp’s silence prompted them to prepare for danger while Lion El'Jonson joined the Imperium’s war effort. The Phoenix Lord pledged Biel-Tan to Ramesses, who began planning to claim its Crone Sword, as Mortarion prepared a sacrifice-filled attack to fulfill Nurgle’s plan for Godblight.

• Ramesses noticed that the Warp had gone quiet, and Arthur ordered the Lamenters to test a route while warning forces to avoid the Forge Fleet’s path.
• Arthur explained the growing Warp influence and the Lamenters’ misfortune to Lion El'Jonson, who accepted the need to lead humanity in the supernatural war.
• Ulthran warned the Phoenix Lord against trying to recruit the powerful beings on Caliban, but the Phoenix Lord offered Biel-Tan and its service to Ramesses.
• Jaghatai abandoned his planned performance, laughed at what he read, and took several coveted scrolls from the Black Library.
• Ku'gath told Mortarion that Nurgle needed more sacrifices for Godblight, and Mortarion ordered his sons to gather them for an attack on a sleeping Primarch.
• Ramesses accepted Biel-Tan’s allegiance and began planning around the Crone Sword within the Craftworld.

Ramesses and his companions traveled to Biel-Tan to inspect its Infinity Circuit under their agreement with the Aeldari, while Lion El'Jonson used his Warp domain to take them there. Meanwhile, Jaghatai concealed the Black Library’s treasures as the Avatar of Ynnead asked him to help descend into Realspace and reclaim the Crone Sword.

• Ramesses explained that Biel-Tan had agreed to the contract, and Romulus approved plans to let Aeldari choose whether to settle on Dawn Sector worlds.
• Lion El'Jonson used the Rock Fortress as a medium to enter his forest domain, where Ramesses revealed that the dead Calibanites living there were his projections.
• Lion El'Jonson led Ramesses, Arthur, and their Aeldari companions through the forest passage to Biel-Tan in thirteen minutes of Realspace time.
• The group set out to inspect Biel-Tan's Infinity Circuit and confirm that its ancestral souls had survived before setting a trap for Ynnead.
• Jaghatai hid the Labyrinth Codex and records of Daemon true names, then listened as the Avatar of Ynnead asked for help entering Realspace and reclaiming the Crone Sword.

Jaghatai rejected Inaad’s request to deceive the Wings of Dawn and chose to seek refuge with Ramesses instead. He offered the Black Library and his service to The Park, unable to bear the thought of the Aeldari dying.

• Inaad asked Jaghatai to hide his plan to awaken an avatar through the Wings of Dawn, but Jaghatai doubted him and accepted a golden talisman.
• At Biel-Tan, Ramesses oversaw the Aeldari’s relocation and work in The Park, even reviving the exhausted High Farseer so she could return to duty.
• Jaghatai compared Ramesses’s contract-bound rule with Inaad’s slaughter of a Craftworld and decided to side with the Wings of Dawn.
• The revived High Farseer connected Jaghatai to Ramesses while the Wings of Dawn prepared to confront Yvraine and block Biel-Tan’s Webway entrances.
• Jaghatai revealed Inaad’s scheme, offered the Black Library, and begged Ramesses to admit him and his troupe into The Park so he could protect the Aeldari.

Jaghatai secured a chance to negotiate with Romulus on behalf of the Aeldari, while Ramesses and his allies trapped and defeated the Avatar of Ynnead. The chapter ended with Ynnead’s power sealed and Slaanesh realizing that Ynnead could no longer represent the Aeldari.

• Jaghatai overcame his fear long enough to contact Romulus and offer the Laughing God’s resources and cooperation.
• Ramesses used Yvraine and the Infinity Circuit to draw out the Yncarne, who escaped toward the Webway.
• Ramesses pursued the Yncarne while Lion El'Jonson ambushed and pinned it, and Arthur helped finish the attack.
• Ramesses sealed the Yncarne’s dispersing power in a small sphere and caught it as the battle ended.
• Slaanesh sensed that Ynnead was no longer whole and stopped worrying about the god’s awakening.

The Wings of Dawn recovered Ynnead’s power, prepared Guilliman’s resurrection, and set off to confront Nurgle’s forces. Nurgle recognized that his plans were failing and warned Rotigus that the coming war could change the rules of the Great Game.

• The Laughing God returned with Ynnead’s remains, and Ramesses made Yvraine his Chosen and gave her the Sword of Silent Screams—Asu-var.
• Romulus reported that Mortarion remained missing and showed Ramesses footage of a Void Whale covered in Nurgle Daemons; Arthur confirmed that Macragge had evacuated its civilians and was defended by the Ultramarines and Nemesis Chapters.
• Arthur ordered the fleet to depart for the battle against Nurgle, while Ramesses assigned the Laughing God and the Herald of the Corona new duties and began planning Guilliman’s resurrection.
• Ramesses ordered Yvraine to stab Guilliman during the resurrection ritual, and the reunited fleet left the Segmentum Obscurus.
• Saint Celestine reappeared in the empty star system, was attacked by the Lion’s sons, and returned to the Warp.
• Nurgle reflected on his mounting losses and weakening confidence, then told Rotigus that this was their final struggle and that the coming war would change the future and the rules of the Great Game.

Mortarion’s Death Guard stalled amid fierce resistance on Civitavecchia as Nurgle’s forces suffered catastrophic losses to the Blood Angels and their allies. Nurgle began destroying his own followers, and Ramesses showed Arthur the god’s unexpectedly extreme reaction.

• Mortarion fought through the decaying port on Civitavecchia, where the defenders continued counterattacking despite dwindling supplies and mounting casualties.
• Mortarion and Ku'gath argued over whether to accelerate their plans, but their communication ended when Nurgle killed the Plaguebearer serving as their link.
• Septicemia was wounded and surrounded as Karna and the Blood Angels slaughtered Nurgle’s forces on a nameless planet.
• Karna explained that the Blood Angels’ bonds with humanity strengthened them, then vowed to erase Septicemia and Nurgle’s corruption.
• Nurgle destroyed his own followers in reach, leaving Mortarion to cry out in despair as their deaths nourished the God-Blight.
• Ramesses showed Arthur Nurgle’s extreme reaction while Arthur and Lion El'Jonson discussed plans to relieve pressure on the Maelstrom.

Ramesses and Arthur discussed why Nurgle reacted so violently to losses in Realspace, while Lion El'Jonson joined their strategic planning and reflected on his brothers' trust in him. Romulus's growing delight at having less work alarmed Karna, and Arthur presented the latest frontline data as the group prepared to assess threats beyond Godblight.

• Ramesses concluded that Nurgle was panicking because Realspace had become dangerous enough to force him to sacrifice his own Daemons, unlike the other Chaos Gods.
• Arthur showed Lion El'Jonson Tigurius's reports on attacks against Greater Ultramar, including Civitavecchia, and asked him to help plan deployments.
• Lion El'Jonson reflected that his brothers trusted him more than he trusted himself, then studied Arthur's star map and drafted military plans.
• Romulus enjoyed the reduced workload Lion El'Jonson had brought, while Grand Chamberlain Drakus worried that Romulus had begun laughing strangely.
• Karna heard Romulus laughing, feared that his brother had worked himself insane, and rushed into the office hall.
• Arthur displayed the latest frontline data and asked what threats remained besides Godblight.

Mortarion confronted the deaths and losses that followed the God-Plague, reassured Caiphas Morrag while concealing his own responsibility, and ordered the Death Guard to concentrate for an assault on Macragge. The chapter then shifted to Arthur, who began briefing others on Greater Ultramar’s situation and its plans against Nurgle’s tactics.

• Caiphas Morrag returned to Mortarion and reported that the God-Plague was complete and fewer than a third of the Death Guard remained.
• Morrag described the Legion’s losses, its failed advance toward Macragge, and rumors that Mortarion had caused the catastrophe.
• Mortarion admitted that his trust in Typhus had exposed the fleet to the Warp, but insisted that failing to protect his sons was his only mistake.
• Mortarion ordered Morrag to prepare the Death Guard for a final assault on Macragge, promising they would return to paradise afterward.
• Arthur began presenting the situation in Greater Ultramar and its contingency plans against Nurgle’s tactics.

Arthur and Ramesses prepared a preemptive strike against Nurgle’s forces while placing Lion El'Jonson in command of Ultramar’s defenses. On Macragge, Calgar learned that Guilliman would soon be revived and found Tigurius exhausted after long-range communications.

• Arthur ordered Ramesses, Lion El'Jonson, and their companions to travel ahead through the Webway and strike Nurgle’s forces before they reached Macragge.
• Arthur gave Lion El'Jonson command of Ultramar’s operations, instructing him to protect civilians, contain Chaos corruption, and communicate with Roboute Guilliman.
• Ramesses teased Lion El'Jonson about his past Exterminatus orders, and Lion El'Jonson accepted the troop list and resolved to correct his mistakes.
• Calgar hurried to the library after Tigurius told him that the Wings of Dawn had found a way to revive Guilliman and recovered Lion El'Jonson.
• Calgar found Tigurius in the library, gaunt and seemingly drained by extensive long-range communications.

The Primarchs arrived on Macragge as the Ultramarines prepared for Guilliman’s resurrection, while Ramesses reprimanded Custodes and relieved Tigurius by assigning Aeldari aides. Calgar agreed to an Aeldari’s role in the ritual, and Romulus placed Lion El'Jonson in command of Greater Ultramar’s defenses.

• Psykers witnessed a Warp omen as the Primarchs’ fleet arrived at Macragge and gathered at the Fortress of Hera.
• Ramesses scolded the Adeptus Custodes for abandoning administrative work to fight Morrag and extending their contracts by 130 years.
• Ramesses restored Tigurius’s strength and gave him an Aeldari rune so he could delegate his workload to vetted aides.
• Calgar accepted the Aeldari’s role in Guilliman’s resurrection ritual and asked Ramesses to protect Guilliman.
• Romulus entrusted the defense of Greater Ultramar to Lion El'Jonson, who chose Azrael as his deputy.

Lion El'Jonson took command of the Ultramarines fleet and departed to lead the counterattack, while Romulus rallied Macragge's exhausted defenders with news that reinforcements had arrived. Meanwhile, the Death Guard struggled against the defenders' fierce resistance, and Mortarion learned from the Nightbringer that Arthur was a complete C'tan and that the Lion was coming.

• Lion El'Jonson reviewed the materials, accepted command of the fleet, and departed with Calgar and other commanders to lead the campaign.
• Romulus and Drakus discussed the dormant Pharos Beacon, renewed Nightbringer activity, and sent the Lion information about the C'tan threat.
• Romulus told Tigurius and the exhausted staff that reinforcements had arrived and urged them to support the counterattack.
• Morrag led surviving Death Guard through their ship as the Wings of Dawn's forces shattered their advances and resistance across Ultramar stalled them.
• The Nightbringer warned Mortarion that Arthur was a complete C'tan and that the Lion was coming, threatening to withdraw if the conflict dragged on.

Vorx’s Death Guard forces were crushed by Lion’s campaign in Ultramar, and Lion’s fleet moved on to its next target. Mortarion allied with the Nightbringer to delay Lion while he prepared to attack Calth and break through to Macragge.

• Vorx fled through his damaged flagship but was spotted by Dark Angels and exploded after struggling with fear and his altered consciousness.
• Lion completed the assault, learned that his forces had silenced the ship, and ordered them to proceed to the next target.
• Mortarion asked the Nightbringer to keep Lion and his fleet from interfering for a month, and the Nightbringer agreed.
• Mortarion learned that the Fifth Company had been annihilated and felt his emotions fading as deathly power gathered around him.
• Mortarion resolved to attack Calth, break its defenses, and advance on Macragge to seize Guilliman.

Karna arrived at Calth and helped organize the evacuation before leading the Blood Angels against the Death Guard invasion. He confronted Mortarion in battle, and their clash left Mortarion shaken by the possibility that he had once possessed the strength to resist Nurgle.

• Karna comforted an old grenadier who wanted to fight, then helped the evacuation staff reunite him with his grandson so the refugees would board the ships.
• Sepatus told Karna that Mortarion's main Plague Fleet was approaching, and Karna led the Crimson Paladins into battle as the Blood Angels took the front line.
• Mortarion arrived on Calth and sent his Deathshroud and Unbroken to attack the defenders while he advanced toward Karna.
• Karna taunted Mortarion about his fallen sons and his surrender to Nurgle, then fought him with his spear as Mortarion struck back with Silence.
• As the duel intensified, Mortarion recognized that Karna's power came from his own resolve and wondered whether Nurgle had taken away a similar power he once possessed.

Lion reviewed the Dark Angels’ victories and prepared to move his fleet toward Calth, but an attack report revealed that the Nightbringer had struck a nearby shrine world and was targeting him. Lion ordered the fortress world and the remaining fleet onto emergency defense as the C’tan could arrive at any moment.

• Lion reflected on his recent victories, checked his rising pride, and prepared to leave his quarters aboard the Inexorable Truth.
• Lion crossed the ship, considering the Dark Angels’ changed structure and the intelligence that exposed the Primarchs’ past choices, then headed to the bridge to discuss fleet movements with Azrael and Redloss.
• Azrael showed Lion a report describing an unknown attacker that had devastated a shrine world before a Bishop drove it back with the Emperor’s power.
• Azrael identified the attacker as the Nightbringer, a C’tan capable of stopping matter and apparently able to travel faster than light; Lion realized it was targeting him.
• Lion ordered the fortress world to raise emergency alert, maximize its Void Shields, gather the remaining fleets around him, and use churches as defensive strongholds for devout believers.