Chapter Summaries

Ghazghk’s signal drove the T'au Empire’s smart mines into logical collapse, and their Last Line of Defense classified every fast-moving object as hostile. When Korsar’s patrol fleet entered the minefield, the mines attacked and destroyed nearly the entire fleet, leaving two destroyers fleeing on inertia.

• Ghazghk’s oscillating signal made thousands of Watcher AIs conflict over whether targets were threats or sacred allies.
• The mines activated their Last Line of Defense and began indiscriminately attacking fast-moving objects.
• Korsar led three Guardians-class battlecruisers and their escorts into the minefield without receiving a warning from the crashed Pure Thought intelligence.
• The rogue mines swarmed the T'au fleet, breached a Guardians cruiser’s shields, and destroyed a Tiger Shark destroyer.
• Korsar’s fleet fought back with ion cannons and railguns, but the mines destroyed the bridge and tore the patrol fleet apart within ten minutes.
• Two battered destroyers shut down their engines and escaped on inertia while the mines continued prowling the void.

Sharpfang and Ghazghk launched a surprise assault on the T'au orbital platform Fist of the Firmament-03, teleporting a vast force of Gretchin mechs and troops into its waste chamber. Sharpfang led the attack against a T'au patrol as the invasion began.

• Sharpfang celebrated the destruction of the T'au fleet while Ghazghk prepared hundreds of Gretchin-piloted mechs for an assault on Fist of the Firmament-03.
• Sharpfang's mech and tens of thousands of Gretchin troops teleported into the platform's waste-processing chamber.
• Sharpfang ordered the troops to leave no one alive, and they charged through the chamber gate into a nearby T'au patrol.
• A Gretchin beam disintegrated the patrol leader before two XV25 Stealth Battlesuits opened fire.
• Sharpfang's mech charged the battlesuits and shouted for them to get out of his way.

Sharpfang and the Gretchin mechs smashed through the T'au defenders with Squig rockets and brutal close-quarters attacks. The T'au defensive lines collapsed, and panic spread through the platform.

• Sharpfang crushed two Stealth Battlesuit pilots as the Gretchin surged through the corridors.
• A T'au Shas'ui established a Crisis Battlesuit firing line and expected the attackers to be stopped by its superior range and firepower.
• Squig rockets dodged the T'au interceptors, bounced among the battlesuits, and detonated in a devastating chain of explosions.
• Sharpfang led the Vanguard-pattern Specialised Mechs through the broken line, cutting apart and crushing the surviving Crisis Battlesuits.
• T'au communications reported that sectors had fallen and their anti-armor weapons were useless as defenders were killed and fled.

Sharpfang’s Gretchin legion reached the M.A.R.K-V reactor on Fist of the Firmament-03, where he blocked the T’au’s heaviest weapons with his chainblade and ordered a rocket attack. As the platform began breaking apart and contact with Strong Shield-01 was lost, Qingxi, controlling Shadowsun’s body, sent three fleets to investigate and retake the system.

• Sharpfang led his Gretchin through the platform’s defenses to the reactor, where O'Shano ordered the T’au’s Broadside and Riptide Battlesuits to fire at him.
• Sharpfang held up Choppa and blocked the Railgun projectiles and ion beams, leaving his mech unharmed.
• Sharpfang ordered the Gretchin artillery crews to fire their Katyusha Squig rockets at the T’au positions.
• At the Iron Wall headquarters, reports announced lost communications, a compromised minefield, and the destruction of Fist of the Firmament-03.
• Qingxi, controlling Shadowsun’s body, ordered the First, Third, and Fifth Main Fleets to Strong Shield-01 to retake control and uncover what had happened.

Supreme Ethereal Aun'Va approved Qingxi's plan to lure the Ork raiders into a trap while Aun'Ve prepared Sa'cea to face Saul's advancing human fleet. The T'au Empire split its forces between the two threats as the war reached a decisive moment.

• Qingxi reported that the Orks were bypassing defenses and raiding critical T'au systems, prompting Aun'Va to ask how to stop them.
• Qingxi proposed baiting the Orks into an apparently vulnerable strategic node in the Viola Nebula, and Aun'Va gave her command of the Fire Caste.
• Aun'Va warned Aun'Ve that Saul's reinforced fleet was approaching and that the loss of the Iron Wall had erased the T'au's strategic buffer.
• Aun'Ve ordered the First, Third, Fifth, and Seventh Expansion Fleets to gather in Sa'cea and turn the system into a fortified stand against the Imperium.
• Qingxi departed to prepare her trap for the Gretchin Warlord while Aun'Ve mobilized the empire's defenses around Sa'cea.

Saul welcomed a massive fleet of Imperial Fists, Adeptus Custodes, Knight Houses, and a Warmonger Emperor Titan sent to support his expedition. Chapter Master Vladimir Pugh and Custodian Vilen pledged their forces to Saul, who prepared to lead the reinforcements against the xenos and traitors.

• Saul's fleet detected Imperial Fists and Adeptus Custodes reinforcements emerging from the Warp, accompanied by Knight transports and a Warmonger Emperor Titan.
• Cardinal Esau Gurney fell to his knees at the sight of the reinforcements, while General Gage marveled at their strength.
• Saul recognized the fleet's arrival as the High Lords of Terra seeking his favor and ordered his forces to receive it.
• Vladimir Pugh arrived aboard a Stormbird with Imperial Fists guards and a Custodian, then pledged his brothers and reinforcements to the Emperor's cause.
• Saul asked the Custodian's name, and Vilen introduced himself and vowed to help eradicate the xenos and crush the traitors.

Admiral Yanis led an Imperial invasion of Sa'cea, where the T'au ambushed the fleet and fierce fighting devastated the planet. As Saul watched the world burn, he sensed that the Ember Legion's Gretchin had been wiped out.

• Admiral Yanis's Imperial fleet destroyed Sa'cea's orbital defenses and launched a massive ground invasion.
• A hidden T'au fleet ambushed the Imperial transports as they landed, forcing Yanis to order the warships into a defensive formation.
• Pug and Wendell Gage led Imperial forces through Sa'cea's city while the Titan and Knights attacked T'au defenses.
• Aun'Ve committed reserve Battlesuits and Ghost Squads to halt the Imperial advance, and both sides fought across the burning city.
• Saul watched the battle from the Blade of Sorrow and sensed that the Ember Legion's Gretchin had been wiped out.

Saul ordered a fleet detachment to bombard Sa'cea's functioning cities, aiming to force Aun'Ve to broadcast and reveal his location. The order was set in motion as Saul prepared to have the Adeptus Custodes and Sisters of Silence act against the T'au leader.

• Admiral Yanis reported the Imperial fleet's losses, dwindling supplies, and heavy casualties on Sa'cea.
• Saul identified the T'au fleet's hit-and-run tactics as an effort to exhaust the Imperial forces.
• Saul ordered Yanis to send two Battle Barges and four Strike Cruisers around Sa'cea to bombard its rear cities.
• Saul explained that the bombardment would pressure Aun'Ve into broadcasting, allowing the Tech-Priests to locate him.
• Yanis arranged the operation as Saul signaled Company Captain Vilen, the Adeptus Custodes, and the Sisters of Silence.

As Imperial forces devastated Sa'cea, Ethereal Aun'Ve ordered a planetwide broadcast to rally the people despite risking the enemy tracing his location. His voice reached soldiers, civilians, and a damaged T'au ship, where the chapter ended as they listened.

• The Imperial detachment fleet arrived over Sa'cea's far side, a region that had not yet learned of the invasion.
• At underground central command, Aun'Ve received reports of collapsing cities, breached defenses, and mounting T'au losses.
• Shas'O Mont'yr warned that a global broadcast could reveal Aun'Ve's location, but Aun'Ve insisted that the people needed to hear from him.
• Aun'Ve ordered technicians to activate the broadcast and anti-tracking jamming protocols.
• The broadcast reached a wounded Fire Warrior, civilians in a shelter, and a damaged T'au Destroyer as Aun'Ve began, “My fellow citizens.”

Aun'Ve rallied Sa'cea with a speech about the Greater Good, restoring the defenders' resolve. Saul traced the broadcast to an underground communications array and prepared to reach Aun'Ve with Vilen and the Custodian shield guards.

• Aun'Ve told Sa'cea's people that he would remain with them and urged them to stand together for the Greater Good.
• T'au across Sa'cea answered the broadcast, and Fire Warriors, civilians, and caste workers renewed their efforts.
• Saul listened to Aun'Ve's speech as a Tech-Priest located its source beneath Sa'cea.
• Saul ordered Vilen to prepare his men for a visit to Aun'Ve.
• Thirty-six Custodian shield guards prepared three Kestros-class assault craft in the Blade of Sorrow's hangar.

Saul led Vilen, the Adeptus Custodes, and the Sisters of Silence on a direct assault against the T'au central command headquarters beneath Sa'cea, intending to capture Aun'Ve. Their three assault craft punched through the planet's defenses and began drilling underground toward the target.

• Saul briefed Vilen and the assembled warriors on the headquarters' location and the plan to breach its defenses with assault craft.
• Saul ordered the force to depart, and three Kestros-class assault craft launched from the Blade of Sorrow.
• The craft plunged vertically through Sa'cea's atmosphere as surviving T'au missiles and Pulse Cannons attacked them.
• The assault craft struck the ruined industrial district at extreme speed, flattened the surrounding ruins, and drilled into the planet's crust.

Saul and Vilen’s force breached all twenty defensive layers and advanced toward the T'au Core Command Center, where Aun'Ve chose to stand and face them. Shas'la Kor assembled Sa'cea’s defenders in Corridor Seven as the Imperials approached.

• Saul, Vilen, and thirty-six Shield Guards exited the assault craft after it drilled through twenty defensive layers, then advanced toward the final alloy wall.
• Aun'Ve refused Monta’s offer to evacuate and ordered every available guard unit to defend Corridor Seven.
• Monta mobilized the command center’s armed forces while technicians and Fire Caste guards took up weapons and formed defensive lines.
• Commander Shas'la Kor positioned Sa'cea’s troops and battlesuits in Corridor Seven and urged them to hold their ground for the greater good.

Kor’s T'au defenders failed to stop Vilen and the Custodian Guards from breaking through the first defensive line. Kor regrouped the survivors at the second line and prepared a heavy-weapons volley as the golden warriors advanced.

• Kor ordered the first defensive line to fire, but Vilen’s twelve shield-bearing Custodian Guards formed a barrier that deflected the T'au bombardment.
• The Custodians advanced behind their shield wall and precisely destroyed T'au weapons and firing positions, forcing Kor to order a retreat.
• Vilen ordered the Custodians to charge, and their shield wall smashed through the T'au defenses and killed the Fire Warriors who could not escape.
• Kor withdrew to the second defensive line and ordered the Broadside Battlesuits and Riptide Battlesuits to prepare a concentrated volley.

Saul’s golden shock wave shattered the second defensive line, forcing Kor and fewer than fifty Fire Warriors to retreat to the final line. They fired and detonated Photon Grenades against the advancing Adeptus Custodes, but the golden shield wall remained intact.

• Kor ordered the second defensive line to fire Railgun projectiles and Ion Streams at the Adeptus Custodes, cracking their golden barrier.
• Saul leaped over the shield wall and unleashed a golden shock wave that overwhelmed the Broadside pilots and slowed the Riptide pilots.
• Vilen led the Shield Company through the breach, and the Shield Guards destroyed the Riptide Battlesuits in close combat.
• Kor retreated with fewer than fifty Fire Warriors and ordered them to gather Photon Grenades for a final defense.
• Kor and the Fire Warriors fired their Pulse Rifles and detonated the Photon Grenades, but the Adeptus Custodes’ shield wall kept advancing.

Kor and fifty fire warriors died trying to stop the Adeptus Custodes, while Aun'Ve prepared to make a final stand in the command centre. He sent the technicians through the Emergency Evacuation Passage, but Monta stayed beside him as the Custodes approached.

• Kor led fifty fire warriors in a charge against the Adeptus Custodes, and the Custodes killed them all.
• Kor died after watching Khaine's Photon Grenade fail to stop a Shield Guard.
• Aun'Ve took a combat sword as Monta told him the Emergency Evacuation Passage would remain open for thirty seconds.
• Aun'Ve ordered the technicians to lower their weapons and escape through the passage, and they obeyed.
• Monta refused to leave Aun'Ve, and the two prepared to face the approaching Custodes together.

Saul confronted Aun'Ve and Monta in the breached command center as the city burned and the T'au fleet was routed. Aun'Ve and Monta chose to face Saul in an oath-bound duel, and Aun'Ve learned that Saul attacked simply because they were xenos.

• Saul entered the command center and told Aun'Ve that his guards were dead, the defenses had fallen, the city was burning, and the fleet was losing.
• Aun'Ve refused to surrender, saying an Ethereal had to stand at the forefront in the darkest hour, even when death was certain.
• Saul ordered the others to withdraw, and Aun'Ve ordered Monta to leave, but Monta refused and stood beside his Ethereal.
• Aun'Ve and Monta raised their blades in the Fire Caste's Oath by the Blade salute before facing Saul.
• Aun'Ve asked why Saul attacked the T'au, and Saul answered that they were xenos.

Saul defeated Aun'Ve and Monta, then honored them as warriors before they died. As Shadowsun arrived at Sa'cea and learned of Aun'Ve's death, she ordered a sacrificial rearguard to delay the Imperium while the remaining T'au forces evacuated.

• Aun'Ve and Monta attacked Saul together, but Saul overwhelmed them and killed Monta.
• Saul caught Aun'Ve's final strike, praised him as a true warrior, and comforted him as he died.
• Saul covered Aun'Ve and Monta's faces with fragments of his Chapter banner, and Vilen agreed they had been worthy opponents.
• Shadowsun arrived in Sa'cea's orbit and learned that Aun'Ve's life signs had vanished and the planet had fallen.
• Shadowsun ordered Stealth Fleets and selected forces to delay the Imperium while the remaining warships evacuated from the system.

The Imperium advanced toward T'au and found the T'au had abandoned their outer worlds to concentrate their population and forces on their homeworld. The decisive battle began as both sides prepared their fleets for combat, with Shadowsun ordering the converted merchant ships held in reserve.

• Admiral Yanis and Saul discovered that the T'au had evacuated their colonies and concentrated their defenses at T'au.
• Aun'Va learned from Shadowsun that 143 billion evacuees and 1,537 warships had gathered at the fortified homeworld.
• The Imperial Combined Fleet arrived at T'au, where Yanis saw more than 1,500 enemy vessels and hundreds of orbital defenses.
• Saul ordered the Imperial fleet to attack, and its ships advanced toward T'au.
• Shadowsun deployed the T'au fleets and ordered the converted merchant ships to withdraw to the third defensive perimeter as reserves.

The Imperial and T'au fleets clashed in orbit around T'au, with the Imperium's heavy warships inflicting devastating losses despite the T'au's superior numbers and maneuverability. Shadowsun ordered the elite Stealth Fleet to begin the Assassin Plan and target the central Imperial warship carrying the God-Emperor Titan.

• The Blade of Sorrow destroyed the T'au's Shield of Heaven platform with its main gun, and Shadowsun ordered the fleet to clear the debris and return fire.
• The T'au and Imperial fleets exchanged heavy fire, destroying warships and orbital platforms on both sides.
• Shadowsun ordered the Flowing Water Tactic, and T'au ships used their speed to attack the Imperial fleet's flanks.
• The T'au cruiser Morning Star crippled an Imperial battle barge, but Adeptus Custodes frigates destroyed it in return.
• Shadowsun judged that the T'au could not sustain the battle and ordered the Stealth Fleet to carry out the Assassin Plan against the Imperial warship carrying the God-Emperor Titan.
• The Stealth Fleet commander activated maximum-power stealth mode and prepared to attack the central Imperial warship.

Shadowsun's stealth fleet sacrificed itself to damage the Titan-carrying warship's shields, armor, and main gun charging system, but the T'au suffered far heavier losses overall. Aun'Va ordered the remaining fleet to withdraw to the surface, where he intended to face the Imperial landing forces.

• Shadowblade led fifty cloaked warships in a surprise attack on the Titan-carrying warship, damaging one secondary engine but failing to cripple it.
• Shadowsun ordered the trapped Stealth Fleet to launch a suicide charge, and nine ships overloaded their reactors beside the Titan-carrying warship, collapsing its shields and damaging its main gun charging system.
• Shadowsun saw the Stealth Fleet's signal disappear as the T'au lost more than five hundred warships and began running short on ammunition.
• Aun'Va told Shadowsun to withdraw the fleet, explaining that the planetary shield remained operational and that he would confront the Imperial forces once they landed.
• Shadowsun relayed Aun'Va's order, and roughly nine hundred surviving T'au vessels withdrew to the planet's surface for repairs and resupply.