Ephrael Stern is known throughout the tormented Galaxy under many nicknames. Thrice-born. Anti-demon. Holy Heretic. Lost deep in the heart of the Imperium-Nihilus after the Great Rift, the maligned Sister of Battle fears that the human state has ceased to exist. The light of the God Emperor that had guided her through centuries of battle also went out. Abandoned by everyone, Stern ekes out a lonely existence until a mysterious stranger arrives who offers her a new destiny - perhaps one that promises salvation for the Imperium. Stern must once again prove that she is worthy of the mercy of the God Emperor. Otherwise, a new danger - more serious than any that humanity has faced before - will plunge the human race into a nightmarish abyss of non-existence.