Recaps

Lox and the Imperial forces destroyed the Blackstone Fortress and fought to save Beta-Garmon II, then withdrew to face Horus on Beta-Garmon III. Horus killed Redloss, destroyed the Divination Needle, and unleashed Chaos across the planet as Aisha survived the fall of her Titan.

• Lox led Corswain and the Iron Men into the Blackstone Fortress, where they battled the Sons of Horus and Vashtorr’s daemon engines, and Corswain killed the Possessed Marine bearing Tarik Torgaddon’s body.
• Lox helped Corswain defeat the fortress’s ancient consciousness and evacuate the boarding force before Eldrad Ulthran sent the Blackstone Fortress into Beta-Garmon’s sun.
• Sanguinius destroyed the traitor Titan Axis of the World on Beta-Garmon II, while Lox and the Mechanicum raised a field shield to protect the planet from the collapsing orbital defense platform.
• After the Imperium defeated the traitor forces on Beta-Garmon II, Lion El'Jonson ordered an evacuation, and Lox used the Machine Spirits to make the Titan Legions withdraw toward their transports.
• Aisha and her Titan crew defended the Divination Needle on Beta-Garmon III as rebel Titans attacked, while Iron Huntress destroyed a Warlord Titan and then fell under concentrated fire.
• Redloss trapped and slaughtered Sons of Horus inside the Divination Needle’s defenses, but Horus arrived, killed Redloss, and destroyed the tower.
• Lion El'Jonson sensed Redloss’s death as Horus unleashed Chaos across Beta-Garmon III, and Aisha survived the fall of the Daemonic Goddess after its cockpit escaped the wreckage.

After Beta-Garmon falls to the spreading void, Lox brings the fleet to Terra and prepares humanity for Horus’s coming assault. With Sevatar’s intelligence, Lox and the loyal primarchs lure Magnus to Terra, where they surround him in the Shadow Prison.

• Lox and Lion El'Jonson rescued Aisha and the surviving Titan pilots, then learned that more than six thousand ghostly Vengeful Spirits emerged from the dark void consuming Beta-Garmon.
• Lion El'Jonson ordered the fleet to retreat to Terra, and the void swallowed Beta-Garmon as Lox speculated that the Four Gods had gathered Vengeful Spirits from other timelines.
• Lox encouraged Adam to choose his own future, and Adam said he wanted to become human and fight for humanity.
• The fleet reached the Solar System, where Lox met the Emperor and Malcador, and the Emperor healed Leman Russ’s wounds while Malcador showed the primarchs a psychic vision of Terra’s past.
• Lox welcomed Tarabuvita No. 37 to Ganymede and appointed her, Belisarius Cawl, and Sage Land to the project to complete the Space Marines.
• Lion El'Jonson’s High Wall failed to stop the dark void, while Malcador used Thought Imprints and primarch broadcasts to direct Terra’s people toward the war effort.
• Sevatar surrendered to the Imperial Fists and told Lox that Curze planned to bring Magnus to Terra, while Horus’s forces were gathering at Ullanor.
• Sevatar led Magnus through a Warp bridge into the Shadow Prison, where Leman Russ, the loyal primarchs, the Custodes, and Imperial Fists surrounded them.

The Emperor returned to the Golden Throne, while Maloghurst restored Horus by sacrificing himself and Mortarion fell to Nurgle through Typhon’s betrayal. At Ullanor, Lorgar and his allies turned on Horus, and Perturabo agreed to help Ahriman search for the missing Magnus.

• Magnus was captured and chained after the loyalist Primarchs defeated him, then placed on the Golden Throne so the Emperor could rise and face the coming war.
• The Emperor reunited with his sons, welcomed Curze back, and vowed to kill Horus himself.
• With Horus near death, Maloghurst used sorcery to reach his wounded soul and sacrificed himself to restore Horus, who ordered the rebel fleet to Ullanor.
• Lorgar gathered Fulgrim and other allies, while Typhon led Mortarion and the Death Guard into the Warp and delivered them to Nurgle.
• The rebel Legions assembled at Ullanor, where Lorgar ordered Fulgrim and Angron to attack Horus and the forces of several Legions clashed.
• Perturabo held back his Iron Warriors as Ahriman told him Magnus was missing, and Perturabo agreed to help find their brother.

Horus rallied the traitor Legions for the assault on Terra while the Emperor resisted becoming the Dark King. At Pluto, Sigismund and the Iron Men destroyed the Twin Gates, then turned to counterattack the isolated rebel fleet.

• Lorgar betrayed Horus on Ullanor, but Layak rejected him, Angeltai stabbed him, and Lorgar became a Daemon Prince before his remaining followers submitted to Horus.
• Horus gathered the traitor Legions, sacrificed millions of slaves, and declared Terra their next destination.
• The Emperor told Lox that he was absorbing Warp energy to face Horus, but Malcador and Oll Persson confronted him and warned that he risked becoming the Dark King.
• Lion, Dorn, and the Loyalist commanders prepared defenses at the Twin Gates, while Sigismund took command of Pluto’s defenses.
• The traitors attacked near Pluto and Neptune, and Sigismund led the Imperial Fists against Little Horus Aximand’s forces as the Loyalists staged a withdrawal.
• Adam and the Iron Men reinforced Sigismund, then destroyed the Cerberus fortress and the Gemini Gates, opening the gate to the Underworld.
• Sigismund rallied the Imperial Fists for a counterattack against the isolated rebel vanguard, while Adam led Iron Men onto Warsmith Vol Braun’s flagship.