Should one not do what one ought to do? Faith in the God-Emperor of Mankind, duty and responsibility fulfilled through service to his mighty Imperium, these are the principles of the orders of the Adepta Sororitas. The Sisters of Battle, the pious warrior women of the Ecclesiarchy and the Holy Inquisition. The Order of Divine Light is one such order. Among their ranks stands Rosetta. One troubled by the past and disturbed by the present is left with questions that must be answered. These questions lead her down a dark path and to a new beginning. The way is not a peaceful one. Upheaval and conflict plague the land. Wars erupt and people change. Rosetta treads a thin path between grace and damnation in search of her answers. Perhaps blissful ignorance is best. What should one do when what they ought to do is unknown even to them? This is a fanfiction set in the universe of Warhammer 40,000. Cover created by Helen Michaels.

The protagonist, Marshal Kael of the Black Templars, is given a mission by a member of the Ordo Malleus, a daemonhunter named Lady Ymira. He must join her in the destruction of a Chapter of Space Marines, the Knights Eternal, who have been declared Excommunicate Traitoris. She believes that the Chapter Master, Sven Baliik, has accepted the gifts of one of the Chaos Gods, and will soon be granted daemonhood. Kael chooses several Initiates and a Sword Brother from his men, and descends upon Requiem, the homeworld of the Knights Eternal. His goal is to purge the heretic, to kill one he used to call brother, but most of all: Kael is coming to destroy the unholy in the Emperor's name.