Recaps

Lorgar raced to Prospero to stop Magnus’s Grand Spell, only to find himself caught in Tzeentch’s schemes and drawn into a battle that helped destroy much of the Webway. As Lorgar was taken to Colchis to recover, Horus began purging prisoners aboard the Vengeful Spirit, and Abaddon led a breakout.

• Lorgar learned that Horus was gathering rebel Primarchs, then fought through Sothaviel’s time-bending Labyrinth and reached Prospero after three weeks had passed.
• Lorgar confronted Magnus atop Prospero’s Pyramid, but Tzeentch’s illusion and manipulation delayed him while Magnus’s Grand Spell disrupted the Imperium’s Warp routes.
• Lorgar joined the fighting on Prospero, killed Thousand Sons defenders, and pursued Magnus’s soul toward the Webway gate to Terra.
• The Emperor empowered Lorgar to oppose Magnus and Tzeentch, but Alpharius’s use of the Tyrant Star distracted the Emperor and helped Tzeentch overwhelm them.
• Lorgar fell gravely wounded as the Tyrant Star’s power broke through the Emperor’s Webway barrier, destroying passages though most personnel had been evacuated and roughly half the Webway remained intact.
• Angron and Curze found Lorgar on Prospero, and Curze followed the Emperor’s instruction to take him to Colchis.
• Horus ordered the Cleansing Plan aboard the Vengeful Spirit, targeting the Word Bearers and imprisoned warriors who had questioned him.
• Abaddon, Torgaddon, and Loken broke the prisoners out of the Brig, and Kaebo warned Abaddon that Horus had betrayed the Imperium and begun a purge.

Abaddon escaped the Vengeful Spirit with a handful of loyalists and named them the Black Legion, while Perturabo defeated Unasis and rescued Calliphone on Olympia. The arc ended with Fulgrim preparing to bombard Olympia and Tarvitz, Lucius, and Chelast trying to warn Perturabo.

• Abaddon believed Kaebo’s account of Horus’s betrayal, rallied the surviving loyalists, and escaped the Vengeful Spirit with Henry’s help.
• Abaddon brought fewer than 150 survivors to the Metis and named them the Black Legion as they set course for Colchis.
• Curze left Prospero for the Fleet while the surviving Thousand Sons were taken toward Terra and Magnus vanished with his Pyramid.
• Perturabo’s Iron Warriors breached Olympia’s defenses, captured the Anti-Aircraft Position, and advanced toward Dammekos’s final fortress.
• Dammekos accepted Unasis’s offer of power, while Dexter noticed a sulfurous smell at the captured fortress.
• Perturabo entered Unasis’s shifting Labyrinth alone, overcame its illusions, killed the chained minotaur, and rejected the temptation to kill Rogal Dorn.
• Perturabo defeated Unasis and rescued Calliphone, then saw Jaghatai and Fulgrim’s fleets arrive above Olympia.
• Fulgrim ordered a bombardment of Olympia, and Tarvitz, Lucius, and Chelast set out to warn Perturabo after spotting a virus bomb, but Akurduana blocked them.

As Fulgrim’s betrayal devastated Olympia, Perturabo gathered the survivors to resist, while Ferrus Manus unleashed a Mechanical Virus and turned Calth into a base for his new forces. The wider Imperium prepared for war, and Johnny and Oll Persson met Dolly aboard the Yukikaze as Commander Doram arrived.

• Akurduana turned on Lucius, Chelast, and Tarvitz, while Tarvitz escaped the Pride of the Emperor and warned Perturabo that Fulgrim planned to destroy Olympia with Virus Bombs.
• Fulgrim’s bombardment and Virus Bombs devastated Olympia, killing civilians such as Booker and engulfing Andreas, Deans, and Percival, while Perturabo rescued Tarvitz and withdrew the Iron Blood.
• Chelast saved Lucius from Akurduana’s psychic attack and escaped with him, while Perturabo united the surviving defenders and began organizing Olympia’s fortresses and anti-orbital weapons.
• Zha Jintai betrayed the remaining White Scars to Acorian, but Ding Xiu killed Acorian’s Court Swordsmen and Pei Min killed Zha Jintai before Perturabo brought them into the bunker.
• Ferrus Manus launched his attack on Calth, where the Mechanical Virus transformed civilians into metal creatures, the Iron Hands destroyed the Orbital Defense Platform, and Marius Gage evacuated the surviving Ultramarines.
• Ferrus Manus used the Key of Hell to resurrect the dead as metal-altered soldiers and turned Calth’s black Cubes into factories, declaring the planet the beginning of his conquest of Ultramar and the Imperium.
• Rockefeller imposed martial law and expanded war preparations, while Anna ordered Valkyrie to awaken and equip 1.75 million Space Marines from cryostasis.
• Johnny and Oll Persson shared a meal aboard the Yukikaze with Dolly, who told them he prayed for the Emperor and Lorgar, before Commander Doram arrived.

As the Adeptus Mechanicus and Corax’s Raven Guard attacked Colchis, its defenders fought to hold the planet while Lorgar defeated Corax aboard the Superstar. Vulkan raced to aid Colchis but was trapped in Nurgle’s Garden, where Festus demanded that he surrender or watch his Legion and Nocturne succumb to plague.

• Doram reunited with Leki and Heinrich, and the three friends drank together and pledged to meet again if they died in the coming battle.
• Johnny discovered that a recruit was only sixteen and assigned him to logistics with Sergeant John rather than letting him go to the front.
• Anna learned that a Warp storm had isolated Colchis and ordered the fleet to prepare for unidentified attackers.
• Corax prepared to assault Colchis, while Eloil’s renegade fleet ambushed the Garrison Fleet and the Millennium Herald destroyed the Ark Mechanicus’s ships with its Wave Cannon.
• Corax boarded the Superstar and slaughtered its defenders, but Lorgar manifested through Hess and used a golden psychic vortex to destroy Corax’s body and fracture his soul.
• Corax killed Giselle at the Chaos Altar and absorbed the power of its artifacts, while Eloil’s forces struck Sosavia and Soroth led Colchis’s armored forces against them.
• Anna reorganized Colchis’s defenses after losing contact with the Superstar, and Vulkan set out to bring news of the betrayal to Terra before turning his fleet toward Colchis.
• Vulkan’s fleet was diverted into Nurgle’s Garden, where Festus revealed that he had infected the Salamanders and showed Vulkan Nocturne’s destruction before demanding his conversion.