One year after the events of Soul of a Sith, Ren is traversing the galaxy with his companions. The dark presence of Kalethian continues to burn within him, but there is a new voice inside his mind as well. Hunted by the Jedi, hunted by the Sith, Ren has to fight to save the universe from the greatest threat it could ever face: himself..

For the first two decades of his life, Ren has endured the brutal training of a sith. He possesses enormous talent in the force, but unlike other sith he has never truly been consumed by the dark side. When Ren is cast out by his master, he embarks on a journey to understand who or what he is and he is. Along the way he finds unlikely allies and is pulled into a destiny surrounding one of the most notorious and powerful lords of the original sith race from thousands of years ago.