In the year 3643 BBY, the Sith Lord known as Zash, stationed on Dromund Kaas, tasked her apprentice with a mission: to secure the final component of a weapon designed to counter her rival, Darth Skotia. This weapon was the Cyber neutralizer, specifically designed to be effective against cyborgs. The Apprentice successfully infiltrated the designated facility, obtained the Cyber neutralizer, and eliminated its creator, Dorotsech.
Well before the Apprentice's arrival on Dromund Kaas, Lord Zash had commissioned the scientist Dorotsech to engineer a weapon capable of defeating her cyborg superior, Darth Skotia. Upon the Apprentice's arrival on Dromund Kaas in 3643 BBY, and following their retrieving of the Trandoshan relic, a crucial artifact for defeating Skotia, Zash instructed them to acquire the remaining piece: the Cyber neutralizer. This device had been developed by Dorotsech, who was at that time imprisoned within the estate of the rogue Sith Lord Grathan. En route to the estate, the Apprentice received warnings from Imperial officers that Lord Grathan had instigated a full-scale rebellion against the Sith Emperor, and his forces were now encircled by the Imperial Army loyal to the Emperor.
Upon gaining entry to the estate, the Apprentice dispatched the guards stationed at the entrance and proceeded to infiltrate Grathan's headquarters. He advanced through Grathan's forces, leaving a trail of fallen enemies in his wake, until he reached Dorotsech. Dorotsech revealed the weapon's location and requested protection from the Apprentice, citing Zash's prior promises. However, the Apprentice chose to eliminate Dorotsech, unwilling to allow any witnesses to the weapon's existence. With the weapon now in their possession, the Apprentice returned to Zash, confident in their readiness to confront Skotia.
The Apprentice eventually used the weapon against Skotia, weakening him sufficiently to allow the Apprentice to engage the more powerful Dark Lord in a lightsaber duel, ultimately defeating and killing him.
The mission within Lord Grathan's estate is featured in Star Wars: The Old Republic, a massively multiplayer online role-playing game launched by BioWare on December 20, 2011. This mission portrays the events of the Sith Inquisitor class story mission titled "Dismantling the Machine," where the player is dispatched by Lord Zash to retrieve a weapon specifically designed to counter cyborgs, with the ultimate goal of defeating Darth Skotia.