‘And Brother Dak’ir… Not all of us want to be brought back. Not all of us can be brought back,’ said Fugis, swallowed by the dark.

The surface of Stratos writhed with perpetual storms. Lightning streaked the boiling tumult and thunderheads collided in violent flashes, only to break apart moments later. Through these ephemeral gaps in the clouds tiny nubs of chlorine-bleached rock and bare earth were revealed, surrounded by a swirling maelstrom sea.

The Thunderhawk gunships Fire-wyvern and Spear of Prometheus tore above the storm’s fury, turbofans screaming. They were headed for the conglomeration of floating cities in Stratos’s upper atmosphere. Named ‘loft-cities’ by the Stratosan natives, these great domed metropolises of chrome and plascrete were home to some four-point-three million souls and linked together by a series of massive sky-bridges. Due to the concentrated chlorine emissions from their oceans the Stratosans had been forced to elevate their cities with massive plasma-fuelled gravitic engines; so high, in fact, that each required its own atmosphere in order for the inhabitants to breathe.

The words of Fugis were still on Dak’ir’s mind and he willed the furore inside the Chamber Sanctuarine of the Fire-wyvern to smother his thoughts. The gunship’s troop hold was almost at capacity – twenty-five Astartes secured in standing grav-harness as the Thunderhawk made its final descent.

Brother-Captain Kadai was closest to the exit ramp, his gaze burning with courage and conviction. He was clad in saurian-styled artificer armour and, like his charges, had yet to don his helmet. Instead, he had it clasped to his armour belt, a simulacrum of a snarling fire drake fashioned in metal. His close-cropped hair was white and shaven into a strip that bisected his head down the middle. Alongside him was his command squad, the Inferno Guard: N’keln, Kadai’s second in command, a steady if uncharismatic officer; Company Champion Vek’shen, who had bested countless foes in the Chapter’s name, and gripped his fire-glaive; Honoured Brother Malicant who bore the company’s banner into battle, and Honoured Brother Shen’kar, clasping a flamer to his chest. Fugis was the last of them. The Apothecary nodded discreetly in Dak’ir’s direction when he saw him.

It was dark in the chamber. Tiny ovals of light came from the Salamanders, their red eyes aglow. As Dak’ir’s gaze left Fugis it settled on another’s, one that burned coldly.

Brother-Sergeant Tsu’gan glared from across the hold.

Dak’ir felt his fists clench.

Tsu’gan was the epitome of Promethean ideal. Strong, tenacious, self-sacrificing – he was everything a Salamander should aspire to be. But there was a vein of arrogance and superiority hidden deep within him. He was born in Hesiod, one of the seven Sanctuary Cities of Nocturne, and the principal recruiting grounds for the Chapter. Unlike most on the volcanic death world, Tsu’gan was raised into relative affluence. His family were nobles, tribal kings at the tenuous apex of Nocturnean wealth and influence.

Dak’ir, as an itinerant cave-dwelling Ignean, was at its nadir. The fact that he became Astartes at all was unprecedented. So few from the nomadic tribes ever reached the sacred places where initiates underwent the trials, let alone competed and succeeded in them. Dak’ir was, in many ways, unique. To Tsu’gan, he was an aberration. Both should have left their human pasts behind when they were elevated to Astartes, but centuries of ingrained prejudice were impossible to suppress.