Chapter Summaries

Magnus and Leman Russ read a story imagining their friendship ending in tragedy during the Horus Heresy, with Leman Russ left grieving beside Magnus on the Golden Throne. They finished the tale together, while the author’s note explained that future Warhammer stories would appear in extras rather than a new novel.

• Magnus noticed Leman Russ’s sadness and pressed him to reveal what was wrong, prompting a dramatic scene that made Magnus recoil from the book.
• The story portrayed Magnus and Leman Russ as close brothers whose friendship was destroyed when the Space Wolves attacked Prospero during the Horus Heresy.
• Leman Russ found Magnus’s desiccated body in the ruined library and later saw him chained to the Golden Throne after the Emperor’s death.
• Leman Russ defended Magnus against an Adeptus Custodes’ condemnation, ordered the guard to leave, and mourned his brother alone.
• Magnus objected to the book’s masculine pronouns and praised its depiction of the Battle of Terra, while Leman Russ tried to hide his smile.
• The author’s note said there would be no new Warhammer novel and that additional stories would be published as extras.

The Primarchs and The Emperor read books depicting romances involving Guilliman, Yvraine, and other Primarchs, while Perturabo worried that his role in Guilliman and Yvraine’s relationship might be discovered. Guilliman openly declared his love for Yvraine and left with her, after which Jaghatai confessed to writing the books and faced questions from Konrad Curze.

• The Emperor questioned Yvraine about a possible relationship with Guilliman, and her startled denial made him more suspicious.
• Perturabo feared The Emperor would discover his involvement in Guilliman and Yvraine’s romance, while Fulgrim enjoyed a book that implied he and Ferrus Manus were its leads.
• Guilliman and Yvraine arrived as the other Primarchs reacted to the books, and Guilliman declared that he loved her despite her being an Aeldari.
• Guilliman pulled Yvraine into an embrace, kissed her, and left with her as Sanguinius blessed their love.
• Jaghatai confessed that he had written the books and declared that he was proud of them.
• Konrad Curze placed his claws on Jaghatai’s shoulder and demanded an explanation of the books’ contents.

The Primarchs joked about Jaghatai’s books and debated which of them should have been genderbent, until Magnus’s uncontrolled psychic blast made their jokes come true. Corax arrived at the Imperial Palace to find the transformed Primarchs and nearly fainted.

• Konrad Curze angrily read Jaghatai’s story about himself and Corax, but The Emperor restrained him and he settled down at the mention of the God-Emperor.
• Rogal Dorn asked why Jaghatai had not written a genderbent Fulgrim, and Fulgrim admitted Jaghatai had a point about his past transformations.
• Rogal Dorn questioned The Emperor about making female Primarchs, prompting The Emperor to explain why he had not created them; Fulgrim, Perturabo, Leman Russ, and Magnus then debated who should have been genderbent.
• Magnus lost control of a psychic blast after Leman Russ teased him, and the blast engulfed Leman Russ before exploding.
• Cegorach appeared behind Isha, who said Dear would enjoy the amusement, while Lin Fan remained unaware of the chaos on Terra.
• The Primarchs and The Emperor realized the genderbent Primarchs had appeared, and Corax rushed into the hall, saw the scene, and nearly fainted.

Guilliman brought Horus, restored after his return from erasure, to meet his transformed Primarch brothers and sisters. Horus reunited with Sanguinius and Lion El'Jonson, then encountered Dorn and Perturabo at the dining hall.

• Guilliman warned Horus to stay calm as they approached Sanguinius, who had been transformed into a woman by a spell linked to Jaghatai's books.
• Sanguinius learned that the spell might remain in place, recovered from her distress, and welcomed Horus back despite their past.
• Guilliman explained that the spell had changed the Primarchs' bodies and personalities, and Horus struggled to adjust to Sanguinius's appearance and gentleness.
• Lion El'Jonson warmly embraced Horus and revealed that she had become the Imperium's Warmaster.
• Dorn brought the struggling Perturabo into the dining hall, where Perturabo confronted Horus about his betrayal of her admiration.

Horus toured the transformed Primarchs with Roboute Guilliman, finding them caught up in bickering, pranks, and unexpected tenderness. They eventually reached The Emperor, whose childish appearance and affection for Valdor left Horus longing for the same attention.

• Perturabo rambled at Horus until Dorn kicked her and she went to play with Lion El'Jonson.
• Magnus and Leman Russ wrestled until Angron calmed them and made them reconcile.
• Aurora and Fulgrim pranked Lorgar and Ferrus Manus, and Roboute Guilliman explained that Aurora was the merged Alpharius and Omegon.
• Horus met Konrad Curze in Corax's arms and received a crushing hug from Vulkan.
• Horus saw The Emperor in a little dress being fed ice cream by Valdor and wished she would dote on him too.

After the Emperor reunited with Horus, Roboute Guilliman visited the imprisoned Jaghatai and Cegorach to learn how to reverse the Primarchs’ gender changes. Jaghatai revealed the possible cures, but Guilliman refused to release her from prison, leaving her furious.

• The childlike Emperor forgave Horus, while Roboute Guilliman left them to speak privately and went to deal with those responsible for the crisis.
• Roboute Guilliman found Yvraine and Mortarion in the underground prison, where Mortarion reported that the equipment was stable.
• Jaghatai explained that the Primarchs could either wait 666,666 days for the changes to fade or find Isha to remove Slaanesh’s power.
• Cegorach laughed at Roboute Guilliman, who punched him in anger without stopping his giggling.
• Roboute Guilliman offered to let Jaghatai out, then refused and said he would keep her imprisoned so she would miss the entertainment.

Jaghatai remained imprisoned while Isha ignored his pleas, and Lin Fan spent several days with her and the others on Catachan instead of writing. As Isha and her companions questioned him about alternate worlds and gender-swapped Primarchs, Terra grew uneasy over the Primarchs’ and Emperor’s long absence.

• Guilliman told Jaghatai that he was holding him at her request, and Cegorach mocked Jaghatai when he hoped to see his sisters’ lives.
• On Catachan, Isha ignored Jaghatai’s call for help and stayed with Lin Fan while Delia, Erika, and Yilafren explored the planet.
• After several days with Isha and the others, Lin Fan resumed writing, and Isha questioned him about Terra, its Emperor, and possible female Primarchs.
• Erika called female Primarchs and a female Emperor blasphemous, while Isha teased her about her recent behavior.
• Yilafren described a prank toy that could change sex, and Lin Fan shared imagined stories about gender-swapped Primarchs with the group.
• On Terra, the Space Marines noticed that the Primarchs and Emperor had been absent for a long time, and Dante wondered what had happened.

Dante, Calgar, and Kor'sarro tried to understand why the Primarchs had ordered large women's garments, while Dorn and Guilliman debated how to explain the secret project to the Space Marines. The Primarchs settled on presenting it as a temporary Emperor-led experiment to comfort warriors scarred by war.

• Calgar guessed that the clothing orders were part of a new gene-warrior program, while Dante suspected the Emperor and Primarchs were creating female Gene-Primarchs.
• Kor'sarro stayed silent, convinced that Jaghatai's secrets pointed to an unimaginable disaster on Terra, and Dante began requesting an audience at the Imperial Palace.
• Dorn argued that other Imperial forces should share the duty of guarding the palace, and Perturabo dismissed the value of its defenders against any truly major threat.
• Dorn and Guilliman reviewed petitions from Space Marines and debated whether to reveal the truth about the project or limit its effects with an explanation.
• Dorn proposed calling the project a temporary experiment by the Emperor to comfort war-weary warriors, then said his emotional needs were already met by his grandfather and grandmother.

The Emperor invited Space Marines from Legions and successor Chapters to the Imperial Palace and announced that their Primarchs would live in female forms so the warriors could experience a mother's love. Sanguinius comforted Dante and the other Blood Angels, while Perturabo struggled to connect with the Iron Warriors before embracing one of them.

• The Emperor welcomed Space Marines from across Terra and explained that the Primarchs would take female forms to offer them maternal affection.
• Dante remembered leaving his father on Baal II and imagined speaking to him before Sanguinius comforted him.
• Dante called Sanguinius Father and thanked her, while the other Blood Angels veterans called her Mother.
• Roboute Guilliman observed that the Blood Angels had accepted Sanguinius's affection and wondered how the other Legions would react.
• Perturabo confronted the Iron Warriors over their discomfort with her appearance, then embraced one of them and gently patted his head.

Perturabo departed to build wearable Dreadnoughts, while Guilliman concealed Jaghatai's imprisonment and kept Kor'sarro from questioning the Emperor's mission. Elsewhere, Lin Fan finished recording a new setting, and Orikan reported that the gate was visible.

• Perturabo left with the Iron Warriors to make Dreadnoughts that could be worn over their power armor.
• Helbrecht asked Rogal Dorn why he had not become a woman, and Dorn claimed it was because the Imperial Fists were his strongest children.
• Guilliman told Kor'sarro Khan that Jaghatai had gone on a secret mission, then warned him not to question the Emperor's arrangements.
• Dante and the Blood Angels showered Sanguinius with gifts, while Bjorn accepted Leman Russ's changed appearance after recognizing his wolf-like soul.
• Lin Fan finished writing the settings and character details, then contacted the Necrontyr technicians to ask about the gate.
• Orikan told Lin Fan that the gate was visible.

At the center of the Milky Way, the Necrontyr completed a gate to another world, prompting Trazyn to travel to Terra and inform The Emperor and the Primarchs. The chapter ended with the Primarchs learning that the world beyond was a younger, less advanced Terra and preparing to choose who would cross the gate.

• The Necrontyr completed a glowing gate, and the Silent King ordered Trazyn to tell The Emperor and the Primarchs about it.
• Trazyn traveled to Terra and found The Emperor in the form of a little girl on the Golden Throne, while Valdor wore a maid outfit.
• The Primarchs arrived, and Roboute Guilliman explained that they had temporarily become women after a minor accident.
• Lion El'Jonson volunteered to cross the gate, but The Emperor told her to wait until they learned more about the world beyond it.
• Trazyn explained that the other world also had a Terra, where humanity had not left its planet and magic was comparatively mild.
• Roboute Guilliman questioned why Lin Fan could not explain the world's true enemies, and Trazyn said Lin Fan had only copied and recorded that worldview.

Trazyn explained the rules for sending Primarchs into the fictional world, and The Emperor chose Magnus and Leman Russ for the mission. The group decided to begin after Roboute Guilliman’s wedding, with Fulgrim offering to help arrange it.

• Trazyn explained that Lin Fan had entered a setting written by someone else and said two Primarchs with opposing traits should undertake the mission.
• The Emperor chose Magnus and Leman Russ, despite Perturabo’s objections and Magnus’s protests.
• Trazyn asked when the mission would begin, and The Emperor scheduled it for after Guilliman’s wedding.
• Trazyn reacted with surprise to news of Guilliman’s wedding and speculated about his bride.
• Fulgrim offered to help plan the wedding, and Roboute Guilliman agreed.

Isha planned Guilliman’s wedding on Macragge while he and his Ultramarines prepared for the ceremony amid widespread doubts about his marriage to Yvraine. Guilliman reviewed the guest list and discovered an Ork named Ongron had been invited, leaving him worried about the disruption the Orks might cause.

• Isha watched a Leviathan in Fenris’s ocean and planned to send Fulgrim ideas for Guilliman’s wedding through dreams.
• Calgar and Cato Sicarius lamented Guilliman’s marriage to Yvraine, while Calgar hid his distress when Guilliman entered.
• Guilliman asked about the guest list and considered how the wedding could present Macragge as an administrative center for the Imperium.
• Guilliman learned that Ongron, an Ork and friend of Angron, had been invited to the wedding and worried that the Orks would cause chaos.

Guilliman contacted Angron to stop the Orks from coming to Macragge for his wedding, but their argument turned into a stream of insults that reached the Warp. The God-Emperor punished Khorne for repeating the curses while Nurgle watched in fear.

• Guilliman sent an Astropath to contact Angron, and Angron first asked why Guilliman was calling instead of making cold bean sprout salad.
• Guilliman opened a direct psychic link to Angron and told him Macragge did not welcome the Orks.
• Angron defended the Orks and explained that he was picking mushrooms with them, but he and Guilliman soon traded insults.
• The God-Emperor heard the argument while teaching Khorne and Nurgle, and Khorne repeated the curses.
• The God-Emperor spanked Khorne until he cursed himself unconscious, then warned Nurgle to behave.

Guilliman ordered Calgar to defend Macragge from Ongron's Orks, while Ongron secretly prepared to travel to the wedding. Guilliman and Yvraine looked forward to their marriage and a possible child, unaware that Isha had distorted their conversation to intensify their desire for each other.

• Guilliman ended his conversation with Ongron, who decided to disguise his ship in purple and lead the Orks to Macragge.
• Guilliman put Calgar in charge of Macragge's security and authorized lethal force if Ongron's Orks arrived.
• Guilliman met Yvraine, and they discussed their wedding and the possibility of having a child together.
• Isha admitted that she had distorted Guilliman and Yvraine's conversation to push their relationship forward.

With one week left until Guilliman and Yvraine’s wedding, the God-Emperor continued training the Chaos Gods while Macragge prepared for the ceremony. Guilliman coordinated his siblings’ efforts and kept Jaghatai away from the public, while Lin Fan and Yilafren discussed the wedding invitation.

• The God-Emperor told Isha that she was training Khorne and Nurgle to become gods of order, and Isha left for the Warp.
• Macragge filled with wedding guests and decorations as Fulgrim persuaded Guilliman to wear her custom formal outfit instead of power armor.
• Vulkan’s Salamanders prepared the feast, Dorn and Perturabo argued over the seating, and Leman Russ brewed liquor for the celebration.
• Guilliman kept Lion El'Jonson and the Dark Angels from handling local problems and arranged for Jaghatai to watch the wedding from behind screens.
• Lin Fan reflected on Guilliman and Yvraine’s engagement as Yilafren recalled Aeldari and Primarch rumors from her school days.

Lin Fan attended Guilliman and Yvraine’s wedding preparations on Macragge, where Trazyn revealed that the Primarchs and The Emperor had been feminized by Isha. The chapter left Lin Fan heading to see Guilliman, who was unhappy with the extravagant wedding outfit Fulgrim had designed for him.

• Isha brought Erika and the others through a portal to Macragge’s central plaza, where Trazyn was overseeing media coverage of the wedding.
• Trazyn teased Lin Fan about the honeymoon, and Isha unnerved him by joking about modifying his living metal body.
• Isha went to check on Yvraine while Yilafren took Delia and Erika to explore Macragge.
• Trazyn told Lin Fan that Perturabo was a woman, then explained that the Primarchs and The Emperor had been feminized by Isha.
• Lin Fan asked to see Guilliman and found him wearing Fulgrim’s extravagant outfit, which the other feminized Primarchs praised.

Corax left Curze in Sanguinius and Horus’s care, but Curze escaped and joined a group of purple Orks after learning about the conflict between Ongron and Guilliman. Meanwhile, Lin Fan toured Macragge’s security control hall and found the Emperor and Primarchs causing chaos in the lounge.

• Corax left Curze with Sanguinius and Horus before departing to prepare formal wedding remarks.
• Curze insulted Sanguinius, scratched her face, and escaped while Horus and Sanguinius searched for her.
• Curze encountered purple Orks hiding on Macragge, learned about the conflict between Ongron and Guilliman, and offered to reveal places to hide people.
• Trazyn showed Lin Fan the central control hall, where Calgar monitored Macragge, and warned that Orks might already have infiltrated the planet.
• Lin Fan entered the Primarchs’ lounge and saw Leman Russ chase Magnus and force her to drink while the Emperor cheered them on.

Lion asked Lin Fan about the next world and learned she could kill whatever seemed dangerous in Berserk. Meanwhile, Jaghatai persuaded Konrad Curze to help make Guilliman's wedding more entertaining, leaving Guilliman with an ominous shiver.

• Lion hesitantly asked Lin Fan about the next world, and he told her to kill anything that did not look good in Berserk.
• Lin Fan went to separate Leman Russ and Magnus while Ongron prepared the Orks to fight their way into Guilliman's wedding.
• Konrad Curze found Jaghatai imprisoned in the secret chamber beneath Macragge and learned she wanted to attend the wedding.
• Jaghatai confronted Konrad Curze about sheltering the Orks, and Curze admitted she resented Guilliman's good fortune and wedding.
• Jaghatai described a plan to make the wedding more entertaining, and Konrad Curze gradually agreed as Guilliman tried on makeup with Fulgrim and shivered.

Guilliman and Yvraine prepared for and began their wedding on Macragge, with their friends and family watching. Just as they were about to finish their vows, Jaghatai shouted from underground to object.

• Fulgrim finished touching up Guilliman’s makeup, and Guilliman checked with Calgar that Macragge was secure.
• Sanguinius asked Calgar for help hunting Konrad Curze, and Calgar sent a reserve unit to support him after Cato Sicarius hinted at wanting Calgar’s position.
• Forty-eight hours later, Guilliman gave a speech thanking his adoptive parents and walked toward Yvraine, who waited in her wedding dress.
• Isha reassured the nervous Yvraine and promised her a perfect wedding.
• Guilliman and Yvraine approached each other as the Emperor, the God-Emperor, and other guests watched.
• As Guilliman and Yvraine prepared to finish their vows, Jaghatai shouted from underground that he objected to their union.