In the age of the Dark Imperium, Primarch Guilliman’s Primaris Ultramarines are a shining beacon in the darkness of war. On the Imperial Hive World of Ikara IX, Chaplain Kastor and Apothecary Polixis, brothers in blood as well as in battle, stand firm against the endless Greenskin horde. But a threat is looming. An invasion like no other assaults the broken city of Shebat, as the crazed warlord Urgork arrives to lay waste to the Imperial forces and capture a Primaris Marine for his own twisted ends.

The eldar are an ancient race whose mode of war blends spirituality with a unique mastery of technology. In times of need, their entire race will rouse to war, led by terrifying, almost mythological figures - the phoenix lords, immortal beings that embody the warrior nature of the eldar. When a burgeoning ork empire starts to pose a threat to the eldar peoples, Jain Zar travels to the craftworld Ulthwé to warn them of the danger.

For Ianthe, war is all too familiar. A former soldier in the Astra Militarum, she now serves Inquisitor Covenant as an agent of the Throne. Her first mission sees her investigating a cult called the Children of Eternity. Falling foul of the local Enforcers, Ianthe soon learns that war in the shadows is seldom straightforward and that the local, angry law-keepers are the least of her troubles.

The Aeronautica Imperialis are the masters of the skies in the 41st millennium, waging wars of breakneck aerial combat where only skill stands between victory and death. Flight Commander Lucille von Shard is an ace, a living exemplar of what it means to fly in the name of the Emperor… or so Propagandist Kile Simlex is told. Braving the foetid waters of Bacchus and its rampaging greenskin hordes, Simlex is tasked with producing a cinema-pict portraying Shard as an Imperial hero. Shortly after his arrival planetside, however, he discovers the war effort is in shambles.

The war for warp-cursed Croatoas rages on. Hailed as 'Giant-killers' for their heroics during Operation Jotunn, Lieutenant Commander Hadeya Etsul and the crew of the Leman Russ Demolisher Steel Tread are hurled right back into battle. Assigned command of a convoy of armour and infantry, Etsul is tasked with escorting a legendary lord commissar through contested territory to stabilise the wavering Ruega Front.

The Realm of Beasts has ever been a place of savagery and destruction, defiant in the face of Sigmar's feeble attempts at liberation. But now, deep within the mountains of the Ghurish Heartlands, something ancient stirs. A god long-trapped is about to awaken, and the drumbeat of war calls. Ferocious Ironjawz, gluttonous Ogors and towering gargants all set their sights on the human interlopers, determined to cast down their keeps.

The Battle Titans of the Adeptus Titanicus are towering war engines, striding to war as holy effigies of the Omnissiah. Greatest of all are the mighty Warlord Titans, their weapons bringing righteous death to alien and heretic alike. Still reeling from a near disastrous battle against tyranids, the Pallidus Morr demi-legio is assigned to a new warzone, a nearby forge world which has fallen under the sway of Chaos.

By the blessing of the Omnissiah was the Mars Triumphant born – from the forges of the Adeptus Mechanicus, the mighty Baneblade super-heavy battle tank comes to bring death and destruction to the foes of the Imperium. As part of the Paragonian 7th Company, Honoured Lieutenant Marken Cortein Lo Bannick commands the venerable war machine in a bitter war against the orks in the Kalidar system. As the campaign grinds on it begins to take its toll upon his crew, and old clan prejudices from the regiment's home world arise once more. In a war which cannot be won by force of arms alone.

Khemet has guarded the tombs of her people for millions of years, patiently waiting for the day when the numberless legions of the dead will rise again. As they finally begin to stir, old ambitions and treacheries are roused with them. Betrayed and imprisoned, dogged by the shame of a terrible failure, Khemet has endured the gravest punishment Necron ingenuity can conjure. Now she is free, offered a single chance to restore her honour and reclaim her standing.

The Imperial Guard are the backbone of the Imperium’s military strength. While the Space Marines get all the glory, it’s the guard that holds back the tide of threats that would soon drown the Imperium by sheer weight of numbers. These audio dramas bring you into their tanks, platoons and trenches to see how ordinary men and women face the horrors of the 41st Millennium.

In the sprawling Imperium of Mankind, everyone serves the Emperor in their own way. From the Inquisitors who hunt the hidden enemies of humanity in the dark places of the galaxy to the brave soldiers who stand on the front line, and the Imperial Assassins who can change the tides of war with a single shot, each has a part to play in preserving the Imperium. This audio drama anthology contains eight stories of the agents who dispense the Emperor's justice.

After seven long years of conflict, the Horus Heresy nears its end. But now, as the Warmaster Horus marches on Terra to rip his father from the Throne, the seat of the arch-traitor’s power lies empty. Cthonia, a world once dominated by brutal murder-gangs, is occupied by the Emperor’s praetorians—the indomitable Imperial Fists. For the Sons of Horus, this outrage demands a reckoning.

In the immense city of Varangantua, life is cheap, but mistakes are expensive. When Probator Agusto Zidarov of the city’s enforcers is charged with locating the missing scion of a wealthy family, he knows full well that the chances of finding him alive are slight. The people demanding answers, though, are powerful and ruthless, and he is soon immersed in a world of criminal cartels and corporate warfare where even an enforcer’s survival is far from guaranteed.

The fortress world of Regium has a proud history, For millennia, it has endured when others have fallen to ruin and damnation, standing defiant in defence of the Imperium of Man. But now it is shaken. Parasitic plagues run rampant, and Regium's citizens are haunted by dreams of horrific monsters feasting upon their flesh and marrow. Lieutenant Castamon of the Ultramarines recognises these signs of an impending Tyranid invasion all too well. Rallying his warriors, the battle-hardened veteran launches a strike force to slaughter the xenos in the outer system, before it can reach Regium.

Born into riches, Probator Symeon Noctis attempts to atone for his past sins by championing the powerless of Nearsteel district. But the sprawling city of Varangantua is uncaring of its masses, and when a bisected corpse is discovered in the neutral zone between Nearsteel and the Adeptus Mechanicus enclave of Steelmound, Noctis finds himself cast into his most dangerous case yet. Partnering with the tech-priest Rho-1 Lux of the Collegiate Extremis, Noctis is drawn into a murky world of tech-heresy, illegal servitors, and exploitation that could end his career, or his life.