For years, the enemy infiltrator posing as Doctor Tarnis oversaw the Republic's secret superweapon projects. The devious Sith scientist used his extraordinary knowledge and the Republic's vast resources to develop a series of powerful weapons that could turn the tide of any future war. What the Republic did not realize is that these weapons could be combined into a far more deadly device.
Before his death, Tarnis transmitted the complete schematics of all his work to his father, legendary Sith Lord Darth Angral. Copies of these records were recovered on Ord Mantell under the code name "Desolator," along with an affectionate series of messages between father and son. Whatever their evils, the Sith feel family bonds as acutely as anyone.