"Hrrr... My Lord, we are approaching the target sub-sector."
On a bridge choked with mutation and profanity, a twisted heretic crewman, sporting two heads and jagged bone horns, bellowed his report. His voice was a gutteral slurry of snarls and static as his multi-jointed fingers danced across a console encrusted with pulsating, tumorous flesh.
"Hehehe... the wails of the dead echo through the deep void. Flesh peels away as wreckage drifts; the dark stars are pregnant with terrible distortions."
A shrill, unsettling laughter mingled with cryptic prophecy. The speaker was an Oracle, one of the pale, living husks bound into the recesses of the ship's interior bulkheads. These wizened forms were twisted parodies of humanity, their withered flesh sapped of vitality and cinched tight by runic warding-bands that hummed with suppressed power.
Where eyes should have been, only bottomless pits of shadow churned, radiating an unnatural, soul-chilling frost. Occasionally, a patch of grey-white skin visible between the runes would reveal a web of fine cracks, as if the meat itself were a mosaic of shattered fragments held together solely by the sorcerous restraints.
Strands of bioluminescent energy pulsed between the cracks in their flesh, weaving into the surrounding machinery like hungry nerves. Mysterious streams of data flickered through their bodies, conduits for the shifting whims of the Warp.
Listening to the discordant cackling, Abaddon felt a sudden, sharp prickle of irritation.
Oracles were unique assets, unlike the common daemon-crew, whom he could strike down in a fit of pique without consequence. These oracles bore the marks of Tzeentch's favor; they could occasionally peer through the shifting veils of the future, a faculty that had guided the Despoiler to countless victories.
Yet, in these latest omens, Abaddon could discern no trace of good news.
Regardless, the Warmaster was content to let a minor slaughter serve as the opening movement of his campaign.
The colossal Chaos fleet tore itself free from the Immaterium in a violent rupture of reality. The massive localized Warp-disturbance caused by the fleet's transition immediately set the vox-thrumming and logic-engines of the Imperial defenders screaming.
At Fort Pykman, sentries slammed the emergency runes as soon as the chronometers spiked with lethal Warp-readings. The Tech-Priests who arrived to decipher the data let out sharp, binary shrieks of alarm. The piercing sirens and the frantic reports from the Logis forced the resident Deathwatch battle-brothers to broadcast high-priority distress signals and wide-band warnings.
Never in the history of this sector had they faced a Chaos incursion of such staggering proportions, and worse, the attack had bypassed their primary defense lines, striking from the rear.
The Deathwatch's call for aid was answered with fanatical haste.
A massive Imperial fleet was mobilized, reserves held in readiness to counter xenos incursions from beyond the galactic rim. The Death Spectres Chapter responded in full, deploying every available blade to the front.
By chance, a contingent of Black Templars was also nearby, engaged in the 9,882nd Ghoul Crusade of their Chapter records. Leading this fleet was a warrior touched by the luck of Axion himself, the newly ascended Emperor's Champion, Thien.
Ever since he had witnessed the omens and been elevated to the rank of Emperor's Champion during the battles in Segmentum Obscurus, Thien had led a dedicated task force separate from the Second Crusade Fleet. They had cut a path eastward, purging the enemies of the Emperor while en route to the Ghoul Stars.
Their mission was twofold: to further hone their martial prowess and to locate the missing Oparian Crusade. Simultaneously, they were tasked with re-evaluating the status of the Cythor Fiends' homeworld.
Back in 989.M41, during the Black Templars' 9,836th Ghoul Crusade, High Marshal Helbrecht had led a scorched-earth campaign against the Cythor Fiends. It was his first command as High Marshal. For eight years, the Templars systematically exterminated the xenos across their outer systems, pushing to the very core of the alien empire. However, upon reaching the homeworld, they found it eerily empty. Before the mystery could be solved, the Chapter was recalled to reinforce Armageddon against the Ork Waaagh!
Since then, the Black Templars had periodically dispatched crusade companies to the Ghoul Stars to finish the holy work. Recently, word had reached them that the Oparian Crusade had vanished without a trace within that haunted cluster of stars.
As the Emperor's Champion, Thien would carry the Master of Mankind's personal fury to the foe, bringing redemption or vengeance to the lost scions of the Emperor.
When the Deathwatch received the Black Templars' confirmation, they were relieved, if not entirely surprised. In this desolate reach of space, the only Imperial forces one could expect to encounter were the peripatetic Black Templars or the vigilant Death Spectres.
However, when the first tactical data-slate arrived, a grim silence fell over the command deck.
The situation was dire. It was, for all intents and purposes, a suicide mission.
The Imperial navy stationed here numbered barely a hundred vessels. Combined with the Deathwatch, Black Templars, and Death Spectres, they possessed only a few thousand Astartes and roughly a dozen Strike Cruisers and Battle Barges.
Thien and the veterans of the Obscurus campaign recognized the aggressor instantly: Abaddon the Despoiler and his Balefleet. The presence of the Gloriana-class flagship, the Vengeful Spirit, flanked by hulking Arks of Omen and a sea of escort craft, left no room for doubt.
The loyalists knew that once the void began to burn, death was the only certainty.
Yet, none hesitated. Whatever the purpose of these traitors might be, they would not find their path unopposed.
The Imperial fleet rapidly assumed a defensive posture around Fort Pykman, the Navy vessels interlocking their firing arcs in a severe battle-cant. To meet the Balefleet in open void-war was folly; they did not have the strength to hold the line for more than a few hours.
Evacuation klaxons blared throughout Fort Pykman. Except for essential gunnery crews, all personnel were ordered to the transport decks. The fortress's massive void shield generators groaned as they drew power, and heavy defense turrets rotated to lock onto the encroaching dark.
As warning signals radiated outward, other Watch Fortresses along the galactic rim and distant Imperial battle-groups began to stir. Their task was simple and brutal: delay the Chaos fleet at any cost and wait for reinforcements.
Abaddon, however, was well aware of the loyalists' calculus. He had to strike hard and fast. If reinforcements arrived, his momentum would stall; if the machine-fleets of the "Iron Men" appeared, the cost in blood and steel would be catastrophic.
At Abaddon's command, the Chaos fleet, already in optimal firing positions, unleashed a devastating opening salvo.
Over a third of the Imperial fleet was vaporized in the first wave of saturated fire. Escorts and destroyers were torn apart in the blossoming fireballs of ruptured reactors, barely surviving the first five minutes of the engagement.