About the book: year / Lost Primarchs. Rangdan xenocides. Massacre in the Advex-Mors system. What do we know about these events that nearly brought the Imperium to its knees? Nothing. We only know the price - two legions, forever erased from the memory of the race. But some things cannot be forgotten. One cannot forget the first betrayal, which forever hardened the father's heart and echoed into the future, becoming the spark that would one day set the galaxy on fire. It all started on Dabog. The Starborn fleet, led by Primarch Soleus Vrask, arrives on the Forge World, where Balor Kell, the renowned lord of the Terran Vanguard, awaits. Second and eleven take the plunge. Their legions are faithful. But to whom? To humanity or its Master?..