Created in the Emperor's own image, the primarchs had long thought themselves to be princes of the universe and masters of their own destiny--they led the Space Marine Legions in glorious conquest of the galaxy, and no enemy of the Imperium could stand against them. However, even amongst this legendary brotherhood, the seeds of dissent has been sown long before the treacherous Warmaster Horus declared his grand heresy. Gathered within this anthology are four novellas focusing on some of the mightiest warriors and leaders that mankind has ever known--Fulgrim, Ferrus Manus, Lion El'Jonson and the twin primarchs Alpharious and Omegon--and the roles that they may have yet to play in war which threatens to change the face of the Imperium forever.

The third novel in The Horus Heresy: Primarchs series, a brand new sequence of novels focused on the superhuman sons of the Emperor. Lord of the mystical and uncanny, Magnus the Red has long studied the ancient crafts of sorcery. A psyker without peer, save only for the Emperor himself, he commands his loyal followers of the Thousand Sons Legion in the Great Crusade, always vigilant for any lost knowledge they might recover from the remains of dead human civilisations. Now, fighting alongside his brother Perturabo of the Iron Warriors, Magnus begins to foresee an approaching nexus of fate. Will he remain true to their mutual aims, or divert his own efforts towards furthering his own mastery of the warp?

Placed in command of a Legion he does not want, in service to a father he cannot forgive, Angron gives an ultimatum to his children, one that will set them down a path from which they can never return… As the Emperor travels the galaxy at the head of his Great Crusade, few events are as important as rediscovering his scattered sons, the Primarchs, and bestowing them as the masters of their Legions. United, a Legion becomes a reflection of its Primarch, both in his strengths and his flaws. For the Twelfth Legion, once the War Hounds and now the World Eaters, the line between strength and flaw is almost impossible to separate. Desperate for his acknowledgement, will the World Eaters follow their father and cast themselves in his broken image or will they resist? And will any of them ever learn who their father was truly meant to be?

Ferrus Manus, primarch of the Iron Hands, employs his brutal methods of war to bring a world to heel in the Emperor's name. The Great Crusade has swept across half the galaxy, a million human worlds now embracing the truth and reason that comes with allegiance to the rule of Terra. But even such unparalleled success comes at a cost. Rumours abound that the Emperor plans to step back from the Crusade and raise one of his primarch sons to lead in his stead. Faced with the bitterly non-compliant human empire of Gardinaal and a leaderless host of Ultramarines, Thousand Sons and Emperor’s Children at his Legion’s command, the Iron Hands primarch Ferrus Manus decides to make an example that even the Emperor cannot ignore.

Book 13 in The Horus Heresy Primarch Series Each primarch is an exemplary being, derived from the Emperor’s own genetic stock to embody a facet of His personality. Their powers are unfathomable, but only one of them is the First. Lion El’Jonson is the paragon of what it is to be a primarch. His Legion, pre-eminent for most of their long history, typify the virtues of temperance, pride, and martial excellency that the Lion embodies. They are the Emperor’s last line and final sanction. They are His Dark Angels. Now, while the Emperor gathers His mightiest sons for an assault on Ullanor Prime, the Lord of the First instead draws his Legion to the farthest reaches of the known galaxy, seeking to subdue a single rebellious world. Is this but another example of the Lion’s infamous pride, or is there more afoot amidst that graveyard of empires that is the Ghoul Stars, more than the Lion will share even with his own sons?

Launch title in The Horus Heresy: Primarchs series, a brand new sequence of novels from Black Library. Long before the coming of the Imperium, the realm of Ultramar was ruled by Roboute Guilliman, the last Battle King of Macragge. Even after learning of his true heritage as a primarch son of the Emperor of Mankind, he strove to expand his domain as efficiently and benevolently as possible, with the XIII Legion Ultramarines as his alone to command. Now, facing a rival empire on the ork-held world of Thoas, Guilliman must choose his weapons carefully – otherwise his dream of a brighter future could be lost forever.

The sixth title in The Horus Heresy: Primarchs series, focusing on Fulgrim, primarch of the Emperor's Children Legion. Lord of Chemos and bearer of the Palatine Aquila, Fulgrim, primarch of the Emperor’s Children, is determined to take his rightful place in the Great Crusade, whatever the cost. A swordsman without equal, the Phoenician has long studied the art of war and grows impatient to put his skills, and those of his loyal followers, to a true test. Now, accompanied by only seven of his finest warriors, he seeks to bring a rebellious world into compliance, by any means necessary. But Fulgrim soon learns that no victory come without cost, and the greater the triumph, the greater the price one must pay...