Diablo Chronicles Episode 15: The Mask of Caldeum and the Black Soulstone

This is a fan narrative rewritten based on the events of the original game. The characters' emotions, dialogue, and scene atmospheres have been reconstructed, and it contains major spoilers.

The Desert City Ruled by Lies

As the Nephalem entered Caldeum, a suffocating heat and an unnatural tension wrapped around their entire body. The dry desert wind carried grains of sand along with whispers of deception that blanketed the entire city. Though it appeared to be a splendid merchant metropolis on the surface, a deep shadow loomed beneath.

In the corners of the bustling bazaar, starving refugees groaned in despair. Conversely, the movements of the Imperial Guards patrolling the streets were stiff and mechanical, and their dull, vacant eyes showed no trace of human empathy or emotion. It was a chilling spectacle wrought by demonic possession.

Tyrael, now a mortal, struggled against the terrible heat of the desert, yet his righteous gaze pierced straight through the city's false facade. In a low, resolute voice, he warned that Belial, the Lord of Lies, had woven this massive illusion to blind the people and swallow the city whole.

Leah walked on, clutching Deckard Cain's old satchel tightly to her chest. Though the grief of losing her adoptive father still pierced her heart with raw intensity, she looked up at the Imperial Palace and tried to cling to hope. She harbored the expectation that the young Emperor, Hakan II, might offer aid to resolve this desperate situation.

At last, an audience with Hakan II was granted. The boy emperor welcomed them, seated upon a golden throne far too grand for his small stature. The child's smile was chillingly perfect, and the welcoming words flowing from his mouth were excessively sweet, carrying an unpleasant, viscous quality that seemed to numb the tip of the tongue.

Though Hakan promised full support, the Nephalem instinctively sensed a cold emptiness lurking beneath the child's voice. The moment the shadows flickering behind the throne subtly shifted shape, a powerful suspicion took deep root in the Nephalem's mind that the Emperor's kindness was nothing more than a thoroughly calculated performance.

As soon as they left the palace, Tyrael asserted that Belial's deception had already seized the very heart of the city. It was the moment it became clear that Caldeum was nothing but a massive mirage, and its true ruler was a cunning demon mocking the entire situation from the throne, wearing the innocent face of a young child.

The Nephalem gripped the hilt of their weapon tightly, vowing to completely tear apart this disgusting veil of lies. However, before uncovering the truth of the Imperial Palace, the most urgent and immediate task they had to resolve was to first eliminate the Coven, who were hiding throughout the desert and slaughtering the innocent, as well as Cain's murderer.

The Bloody Vengeance of Alcarnus

As the stinging sun of the Stinging Winds scorched their skin, the Nephalem crossed the sand dunes, tracking the trail of the Coven. The horrific memory of Cain's final moments made the Nephalem's blood boil, and an unyielding rage, burning hotter than the desert heat, hastened their steps.

Along the paths leading to Alcarnus, the mutilated corpses of cultists and the disgusting remnants of dark magic lay scattered. Leah's hands trembled slightly—not from fear, but from an uncontrollable, raw power fueled by a mixture of grief and anger. Suppressing her bursting emotions, she walked forward in silence.

When they finally entered the city of Alcarnus, it had already been transformed into a horrific slaughterhouse. Iron cages hanging throughout the streets and cultist altars stained red with blood bore witness to the cruel atrocities committed by Maghda. In the ruins vibrating with the stench of death, no trace of survivors could be found.

Over the ruined streets, Maghda's mocking laughter echoed bizarrely. She grated on Leah's nerves by bringing up Cain's miserable death, desperately trying to trigger the unstable power latent within the young woman. At this malicious provocation, Leah's eyes flickered with painful rage.

The Nephalem immediately stepped in front of Leah, shielding her from the witch's psychological assault. As steel weapons cut through the air and clashed violently with barriers of dark magic, the heavy silence weighing down the ruins was shattered. The Nephalem's resolve for vengeance was channeled into the tip of their blade, thrusting fiercely toward Maghda.

Swarms of hideous, insectoid demons and corrupt cultists surged forward. The Nephalem's strikes were precise and brutal, without a single error, and each blow burning with righteous fury harvested every enemy in their path. Black demonic blood splattered in all directions as a fierce melee ensued.

Cornered, Maghda unleashed a torrent of arcane energy in a final, desperate struggle. Narrowly evading the lethal magical trajectories, the Nephalem delivered a decisive blow straight into the witch's heart. With a piercing shriek, Maghda's disgusting laughter that had haunted Alcarnus was silenced forever.

Watching Maghda's body crumble and scatter into hideous ash, Leah collapsed to her knees, panting heavily. Though the vengeance for Cain had finally been achieved, the immense sense of loss and emptiness residing in a corner of her heart remained a deep scar that could never be filled by an enemy's death alone.

A Cold and Unfamiliar Reunion with Her Mother

Deep within the hidden sewers of Caldeum, they discovered a prisoner bound and surrounded by the Coven. The moment the Nephalem defeated the enemies and the darkness cleared, Leah gasped upon seeing the woman's face revealed in the torchlight. It was a face so familiar, buried long ago in faded memories.

She was none other than Adria, the biological mother Leah had long believed to be dead. Yet, the moment of their dramatic reunion was strangely rigid. Rather than shining with warm affection for her lost daughter, Adria's eyes gleamed with a sharp, calculating intellect, and a cold tension lingered instead of a normal mother's embrace.

Instead of apologizing for abandoning her, Adria immediately spoke of a grand plan. In a dry voice, she justified her past actions, claiming she had to wander the world to find the only way to destroy the Great Evils forever, and that it was a harsh destiny only she could bear.

Leah fell into a state of confusion, her mind going completely blank. Her desperate longing for a mother's warmth clashed violently with Adria's excessive coldness. Though she felt her heart ache, inwardly hoping for a single word of comfort, she silently bit her lip and listened to her mother's tale.

Adria revealed to the world the existence of the Black Soulstone, the only artifact capable of trapping the lords of Hell in one place. She began to explain the full scope of this dangerous and grand plan, claiming that this stone was the ultimate key to permanently breaking the chain of the Eternal Conflict that endlessly repeated between Heaven and Hell.

Tyrael expressed deep skepticism regarding the existence of such a powerful artifact. Adria replied that it had been created by Zoltun Kulle, a rogue Horadrim of the past, and though his body had been torn apart and scattered across the desert, his ghost remained bound to the sands, guarding the secrets of the Soulstone.

To obtain the Black Soulstone, they had to resurrect Zoltun Kulle. Allying with a mad mage was a dangerous gamble almost impossible to contemplate, but the Nephalem heavily accepted the reality that there was no other choice to stop the Great Evils, deciding to willingly lend their strength to this mad plan.

Leah watched with mixed emotions as her mother took charge of the situation with absolute authority. Harboring a faint hope that she might finally return to the embrace of a normal family once this terrible war was over, she resolved to blindly trust Adria's cold instructions.

The Scattered Remains of the Betrayer in the Desert

The desolate desert stretched endlessly like a massive tomb where ancient secrets lay buried. To gather the scattered remains of Zoltun Kulle, the Nephalem made their way to the subterranean vaults of ancient assassins hidden deep within the sands. Dust from a forgotten era and the thick remnants of magical power mingled in the heavy air, suffocating them.

Each vault was heavily defended by lethal traps and ancient constructs born of Kulle's genius and paranoia. Braving torrents of fire and poison arrows, the Nephalem pressed forward, shattering massive mechanical golems. Every moment was a succession of agonizing, hair-raising battles between life and death.

At last, they recovered all of Kulle's blood and flesh, which had been sealed by the Horadrim centuries ago. The thick, ominous necromantic energy radiating from beyond the glass jars was horrific enough to make even the Nephalem's hardened skin crawl. Suppressing their foreboding premonitions, they gathered the remains and headed to the heart of Kulle's Archives.

Arriving at their destination, they carefully laid the intact remains before Kulle's ghostly head. As a dark ritual commenced from Leah's fingertips, the surrounding air crackled with spiritual energy, shrieking as if torn apart. A horrific spectacle unfolded as the scattered flesh and bones fused back together with grotesque noises.

As Zoltun Kulle, having reclaimed his flesh, took his first deep breath in centuries, a mad laughter drunk on arrogance and triumph shook the entire hall. He exaggeratedly stretched his newly acquired limbs, savoring the sensation of life coursing through his blood, appearing more threatening than a demon freshly unleashed from Hell.

Immediately upon his resurrection, Kulle began to heap mockery upon those who had restored him. He laughed at the foolish failure of the Horadrim who had sealed him in the past, and bitterly disparaged Tyrael's plight of having fallen to mortality. His boundless arrogance was as dangerous and uncontrollable as his immense magical achievements.

Though he offered to guide them to the Black Soulstone as promised, it was obvious that an ulterior motive lurked within his flashing eyes. Sensing that betrayal could strike at any moment, the Nephalem kept their hand firmly on the hilt of their weapon, closely following the mad mage while remaining highly vigilant.

They descended deep into the massive subterranean complex known as the Archives of Zoltun Kulle. Every shadow in the labyrinthine corridors seemed to whisper Kulle's name, extremely amplifying the taut tension of their uneasy alliance. As they drew closer to the Soulstone, the magical energy in the air pressed down even more heavily.

The Arrogance and Ruin of Zoltun Kulle

In the deepest heart of the Archives, the Black Soulstone floated in the center of a magical containment field. It pulsed and radiated dark energy ominously, as if seeking to swallow all surrounding light. The abyssal void emanating from the artifact created the illusion of gnawing at one's soul just by looking at it.

Approaching the Soulstone, Kulle exposed a shocking truth in a secretive, conspiracy-laden voice. He thrust the reality of this immense power before the Nephalem as if mocking them, revealing that the souls of the five Lords of Hell who had fallen in the past were already trapped and boiling inside this stone, which should have been empty.

Adria had spent the past several decades secretly marking the souls of the demons, meticulously manipulating things so that they would be drawn into this Black Soulstone the moment they died. Kulle burst into mad laughter, mocking Adria's reckless and arrogant plan to dare control the Great Evils with a mere mortal body.

Soon, Kulle turned to the Nephalem and proposed a new alliance. He tempted them to seize the overwhelming power contained within the Soulstone together, bringing both Heaven and Hell to their knees, and ending this tiresome conflict through absolute dominion. It was a madness claiming that with the hero's strength and his own knowledge, they could become gods of the world.

Without a single second of hesitation, the Nephalem resolutely rejected the madman's vain delusion. Upon rejection, Kulle's face instantly contorted with hideous rage; the mask of the arrogant scholar he wore shattered, and the uncontrollable, horrific monster that the Horadrim of old had feared so deeply finally revealed its sinister nature.

A fierce battle began as Kulle unleashed destructive time-warping magic and ferocious fire constructs simultaneously. Even amidst the chaotic magic of warping space and surging flames, the Nephalem's focus did not waver. Piercing through the trajectories of lethal spells, they ruthlessly shattered Kulle's barriers one by one.

The Nephalem's earth-shaking final blow completely shattered Kulle's arcane shield. The fallen genius mage collapsed, covered in blood, cursing the foolishness of the Nephalem who had ruined his perfect plan. His second life, which he had barely reclaimed, met a miserable end once more due to his own boundless arrogance.

As the heat of battle subsided, the Nephalem finally held the Black Soulstone in their hands. Though the artifact's surface was ice-cold, an ominous vibration, as if a massive dark heart were beating within, was felt directly. They had secured the artifact, but the weight of the dense malice it radiated was horrific enough to chill them to the bone.

The Mother's Cruel Devotion and Plan

Returning to the Hidden Camp, the Nephalem handed the Black Soulstone to Adria. She caressed the artifact with eyes filled with a chilling sense of awe, and the red and black radiance emitted by the Soulstone reflected grotesquely in her cold pupils. It was the mad obsession of one who had finally brought her lifelong ambition within reach.

Adria calmly admitted that the truth Kulle had exposed was entirely correct. She disclosed every detail of her unbelievable past, explaining how she had wandered the world alone to brand the essences of the Great Evils and lesser evils with secret marks, completing a massive magic circle so they would be absorbed into this black stone the moment they lost their physical forms.

Now, the only remaining targets were Belial, the Lord of Lies, and Azmodan, the Lord of Sin. Adria assured them that if they could trap those two demons in this stone as well and then shatter the Soulstone, they could permanently end the fundamental terror of Hell that threatened Sanctuary. It was a plan so perfect that it felt ominous instead.

Leah stood in a daze, overwhelmed by her mother's horrifying plan that had spanned decades. The cruel truth that Adria had abandoned her and thoroughly sacrificed her daughter's normal childhood to achieve this grand purpose gouged Leah's heart. The invisible wall between mother and daughter grew even thicker.

Tyrael, unable to take his eyes off the Soulstone, expressed deep concern. He sensed a chaotic storm of demons violently clashing inside the stone without fusing, and issued a stern warning that a mortal's fragile hands could never control such a concentrated mass of pure malice for long.

However, Adria lightly dismissed Tyrael's warning, claiming that the immense magical power latent within Leah's blood was the only key to suppressing the Soulstone's instability. Forced to shoulder a heavy burden of responsibility once again regardless of her own will, Leah shrank back in fear, her shoulders weighed down by an unbearable pressure.

Yet, the most immediate threat at hand was Belial, who had seized control of Caldeum. Adria warned that the Lord of Lies had already grasped the entire empire in his clutches and had completed final preparations to slaughter every innocent life in the city. There was no more time to delay, nor any room to retreat.

The Nephalem adjusted their grip on their weapons, preparing for the final assault on the Imperial Palace. The long era of deception and illusion had to end now. They intended to forcibly strip away the false mask of the child that Belial wore, and make that horrific demon pay a righteous price in blood upon the altar of truth.

Chastising the Lord of Lies

Smashed through the grand gates of the Imperial Palace, the Nephalem burst inside, ruthlessly cutting down the disguised demon guards blocking their path. The once-splendid marble corridors were already drenched in the red blood of innocent citizens, a testament to the horrific carnage wrought by the cruel nature Belial had hidden.

In the center of the throne room, the young Emperor Hakan II screamed, calling for his guards while pretending to be terrified. However, as the Nephalem approached unflinchingly and aimed their weapon, the child's frail voice instantly contorted grotesquely, transforming into a bone-rattling, horrific roar of a beast that heavily weighed down the air in the room.

With a shattering crash, the massive illusion enveloping the palace shattered like a glass window. The magical deception that had maintained the boy emperor's appearance melted away in an instant, lifting the illusion, and Belial, the Lord of Lies who had been hiding behind it, revealed his massive and hideous true demonic form. The terror radiated by his overwhelming size and disgusting appearance consumed everything around.

As Belial's massive forepaws slammed into the marble floor, venomous green flames erupted like volcanoes from the cracked fissures. The demon lord hurled arrogant mockery at the Nephalem, declaring that reality itself was his weapon, his voice tearing at their ears with an unpleasant noise like thousands of insects gnawing.

Narrowly evading the toxic meteor showers pouring from all directions, the Nephalem agilely penetrated the venom-covered battlefield. Piercing the demon's thick hide and carapace required superhuman strength and precise strikes without a single error. Amidst the suffocating mist of venom, the Nephalem's weapon flashed as they launched a counterattack.

Belial constantly wove new illusions to disrupt their vision, seeking openings in the Nephalem's defense with illusory attacks. Yet, the hero was not deceived by visible falsehoods, swinging their blade only along the trajectory of truth pointed out by honed instinct and righteous anger. The illusions were torn apart helplessly before the sharp strikes.

The moment Belial showed a vulnerability in his defense while preparing a lethal spell, the Nephalem gathered all their strength and delivered a devastating blow. The weapon pierced the demon's hard breastplate, shattering his deep core, and the dark magic that had been rampaging uncontrollably stopped in an instant as the massive demon's body convulsed.

The Lord of Lies let out a deafening death rattle as his hideous body collapsed. The green toxic flames that had boiled the floor scattered into the air like a lie, and in the ruined throne room, only the nauseating smoke left by the demon and a hollow echo signaling the end of the long deception quietly lingered.

The Sealed Soul and the March to the North

As Belial's massive corpse began to dissipate into disgusting smoke, Adria stepped forward, holding the Black Soulstone in both hands. The ancient necromantic incantation flowing from her lips sharply cut through the heavy silence lingering in the throne room, and the stone's surface flared with a chilling red light, as if thirsting for blood.

A dense vortex of darkness erupted from the demon's remains, violently sucked into the artifact with a horrific shriek. The Soulstone greedily devoured the massive essence of the Lord of Lies, emitting a morbidly bright light, and the resulting shockwave shook the very framework of the palace as if it might collapse at any moment.

Leah's hands trembled violently as she endured the overwhelming pressure radiating from the Soulstone with her entire body. Squeezing her eyes shut, she pushed the latent power within her to its absolute limit, desperately suppressing the violent vibrations of the demons raging inside the artifact. Even amidst the surging waves of darkness, she stood firm, never losing her human self.

The violently convulsing stone finally regained its stability, and now even the essence of the Lord of Lies was trapped within. Though the immediate, horrific threat that had sought to swallow Caldeum was gone, no one could savor the joy of victory. The air in the room was still weighed down by an unspeakable, dense terror and foreboding.

A deep shadow of worry fell over Tyrael's face as he gazed at the northern sky. He announced that a desperate message had just arrived from Bastion's Keep. The news that a horrific army of Hell led by Azmodan, the Lord of Sin, had finally begun a catastrophic siege of the keep placed yet another heavy burden upon their shoulders.

They were not even granted the luxury of catching their breath or resting to heal their wounds. The Nephalem nodded with a grim expression, engraving deep into their bones the reality that they must defeat the last remaining Lord of Hell before he could unleash his uncontrollable wrath upon all of Sanctuary. An even more horrific storm of blood was foretold on the path ahead.

While hurriedly packing her things, Leah cast anxious glances at Adria's back. The bond between mother and daughter was still like thin ice, precariously built upon dark secrets and a grand destiny yet to be fulfilled. Suppressing an inexplicable anxiety, she readjusted Cain's old satchel on her shoulder.

Leaving the wounded Caldeum behind, the companions quickly turned their steps. Clutching the Black Soulstone—the most dangerous and horrific artifact in the history of Sanctuary—to their chests, they advanced toward the frozen lands of the north, where fierce blizzards raged. The inevitable final showdown with Azmodan was opening its maw toward them.

Sources Consulted

Official Blizzard Chronicle: After the Destruction of the Worldstone

Official Blizzard Lore: Book of Tyrael and the Leoric Lineage

Official Blizzard Lore: Adria's Betrayal

Official Blizzard Material: The Black Soulstone and the Reconstruction of the Horadrim

Official Blizzard Material: Malthael and Westmarch

Official Diablo III Store: Battle.net