Fear to Tread describes an operation by the forces of Chaos that is supposed to turn Primarch Sanguinius and the 9th Space Marine Legion, the "Blood Angels", to their cause.

Ironfire: Following his failed siege at Schadenhold, a broken Idriss Krendl attempts to redeem himself by conducting a prototype strategy against another fortress on Euphorus, but with the Emperor's Children as his targets. The Space Wolves, accompanied by other Imperial forces, are to bring Magnus and his Legion to Terra to account for themselves. The novel marks the first distinguishment of the "Loyalists" and "Traitor" factions within the Legions and other rebel forces, including the unmodified soldiers of the Imperial Army. It comes with loads of weapon options and lots of different ways to personalise your mighty war machines.Riven centers on the Iron Hand representative to the Crusader Host, Crius, who is tasked by Rogal Dorn with finding the remnants of the Iron Hands and bringing them back to defend Terra. Over the course of two Terran centuries, the Crusade has reached star systems more than 50,000 light years away from its original staging point in the Sol ( Solar) System, has assimilated millions of worlds into the Imperium, and has given Humankind a dominant position among the galaxy's species.

This results in public and humiliating censure of Lorgar and the entire assembled Legion, by the Emperor himself. It also has a beautiful showcase section of various Horus Heresy armies, as well as a few battlefields. The scheming Primarch of the Word Bearers orchestrates genocide in unprecedented scale, as a way to summon the powers of Chaos. One of the system's worlds, the death world of Pythos, is the source of a warp anomaly of great significance.The stories further describe aspects of the rebels' Ultramar campaign, as close prequels or sequels of Books 19 and 24. Herald of Sanguinius: With Sanguinius crowned Emperor of the Imperium Secundus and the threat of assassination everywhere, Azkaellon has to contend with having to protect his primarch. There have been several previous unsuccessful attempts against Horus' life, and this gives a high-ranking officer of the Traitor Word Bearers Legion the idea to field a nemesis weapon of his own: a highly specialised assassin, who is to be used in an audacious scheme to kill the Emperor. This is a ton of weapons, and it’s so nice that you’ll be able to arm your squads with the weapons you want!