The primarchs, nigh-immortal sons of the Emperor of Mankind, take the stage in a series of short stories showcasing some of their great deeds and hideous acts from across the Great Crusade and the Horus Heresy.

The Horus Heresy is an epic conflict spanning hundreds of worlds and thousands of battles, laced with countless tales of heroism and valour, betrayal and villainy. This anthology collects some of the most memorable, featuring every one of the Loyalist and Traitor Legions. Whether you're a veteran Legionary or exploring the grim setting of the Horus Heresy for the first time, this handpicked collection of 21 existing short stories features gripping tales for each of the Loyalist and Traitor Legions that waged wars of betrayal and destruction on an immeasurable scale.

Sons of the primarch Roboute Guilliman, the Primaris Ultramarines are peerless warriors whose sworn duty is to protect mankind from the predations of the xenos and the foul traitors of the Heretic Astartes. In a galaxy riven by eternal war, they and the other armies of the Imperium are all that stand between mankind and damnation. Their ship damaged by warp storms, the Ultramarines of strike force Cassian make for Kalides Prime. Also within this book is a host of awesome short stories to give you a flavour of the many warring armies that exist within the worlds of Warhammer 40,000.

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.

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.