Constantin Valdor. It is a name that brings forth images of heroism, honour and peerless duty. For it is he who commands the will of the Legio Custodes that most esteemed and dedicated cadre of elite warriors. He is the Emperor's sword, His shield, His banner and he knows no equal. Clad in shining auramite, his fist clenched around the haft of his Guardian Spear, he is the bulwark against all enemies of the throne, within or without.

Nearing the end of the wars of Unity, Valdor's courage and purpose is put to the test as never before. The petty warlords and tyrants of Old Earth have been all but vanquished, and the Emperor's armies are triumphant. What now for the nascent Imperium and what fate its forgotten soldiers, its Thunder Warriors and armies of Unity? A new force is rising, one which shall eclipse all others and open the way to the stars. But change on Terra is seldom bloodless and for progress to be ensured darker deeds are necessary.