Raid on the Black Sun headquarters During the Cold War between the Galactic Republic and the Sith Empire , the Coruscant Security Force ' s special tactical unit and a Jedi Knight raided the headquarters of the Black Sun crime syndicate on the Republic capital of Coruscant in order to rescue the scientist Doctor Eli Tarnis . Tarnis , the creator of the Planet Prison superweapon , had been kidnapped by Black Sun and taken to the gang ' s territory , and the former apprentice of Jedi Master Orgus Din — now a Jedi Knight on an assignment on Coruscant — was sent to rescue the scientist . With the aid of Sergeant Nidaljo and the special tactical unit , the Knight and the astromech droid T7 - O1 successfully invaded the gang ' s headquarters , but instead of finding Tarnis , the Jedi discovered that Tarnis was in fact a Sith Lord . Together , the CSF and the Jedi defeated the Black Sun leader Salarr , and put a major dent in the syndicate ' s operations , and the Knight returned to the Senate Building determined to hunt down the traitorous Tarnis . Prelude . In 3643 BBY , during the Cold War between the Galactic Republic and the Sith Empire , the Sith Lord Tarnis — who was posing as a scientist working on the Planet Prison superweapon — felt that his undercover mission was threatened by the arrival of four Jedi on the Republic capital of Coruscant : the Jedi Masters Bela Kiwiiks and Orgus Din , Kiwiiks ' Padawan Kira Carsen , and Din ' s recently Knighted former apprentice . Arranging for the Migrant Merchants ' Guild crime syndicate to steal the Planet Prison ' s design files , Tarnis then staged his own kidnapping from the Senate Building with the help of the Black Sun syndicate in exchange for Imperial weapons and technology . After capturing the kidnappers ' leader , a man named Zeer , following a standoff in the Coruscant Spaceport , Carsen and the Knight learned that the firefight had been a distraction while Tarnis was whisked away to Black Sun territory . The two Jedi alerted Agent Galen of the Republic Strategic Information Service , the Republic ' s intelligence agency , of the developments before returning to the Senate Building , and Galen immediately reached out to his contacts in the Coruscant Security Force ( CSF ) . At Galen ' s request , the CSF ' s special tactical unit diverted from their assignment of fighting Black Sun to gather information on the syndicate ' s headquarters and set up a perimeter around the building . However , Tarnis had never actually made it to Black Sun territory , as he had traveled to the territory of his allies in the paramilitary Justicars ' Brigade instead . Back at the Senate Building , the two Jedi updated their Masters and General Var Suthra of the Republic Military on the situation . While the design files had been recovered earlier by the Knight , Galen ' s analysts had determined that the files had actually contained information on the entire Republic superweapon initiative and had been copied by Black Sun , putting the Republic ' s weapons projects at risk . As a result , Galen and the Jedi Masters decided to depart Coruscant in order to secure each of the three off - world weapons facilities , and Galen left all of his available resources at the Jedi Knight ' s disposal . Galen also notified the Knight of the location of the special tactical unit and told the Jedi to make contact with the unit ' s leader , Sergeant Nidaljo , as he would be able to help retrieve both the copied data files and Doctor Tarnis . The raid . While Carsen remained behind at the Senate Building , the Knight departed with an astromech droid companion , T7 - O1 , or " Teeseven , " and took an an air taxi to Black Sun territory . While the duo were fighting their way to Nidaljo ' s location in the Lower Gangland region , the special tactical unit was suddenly attacked by heavily armed Black Sun members , who overwhelmed the police officers and drove them into a nearby building , killing six of the unit ' s members in the process . Nidaljo ' s men set up a hasty barricade in an attempt to hold off the criminals , and the Knight ' s timely arrival saw the Jedi cut down the Black Sun attackers and grant the police a reprieve . Speaking with the Sergeant , the Knight learned what had happened , and the death of a seventh officer — a man named Jorin — during their conversation only served to dampen Nidaljo ' s spirits further . However , the Jedi was able to inspire the downtrodden CSF officers to continue their mission , and Nidaljo ' s men soon rallied to the Knight ' s call and prepared for an assault . While Nidaljo ' s men readied themselves for the attack , the Jedi and Teeseven took out the base ' s main security network and defenders near the front entrance , and both groups then launched assaults on the headquarters from opposite directions . When the Knight and Teeseven finally reached the command center , they found the leader of Black Sun — a Human named Salarr — speaking with a hooded Tarnis via holocomm . Listening to Tarnis , the Jedi learned that the scientist was in fact a Sith Lord , and that he had traded weapons and armor to Black Sun in return for them faking his kidnapping . Salarr was furious with Tarnis for betraying him , as he thought that the Sith had set him up , but Tarnis brushed aside the criminal ' s anger and warned the Jedi that Coruscant was already doomed . When Tarnis ordered Salarr to kill the Knight and ended the transmission , one of Salarr ' s men tried to shoot the Jedi in the back . However , Sergeant Nidaljo and two of his men arrived at that moment and dispatched the criminal before he could pull the trigger . The Knight greeted Nidaljo and ordered him to surrender , but the gang leader attacked regardless . With the advantage of numbers , Nidaljo and the Jedi were able to defeat Salarr and the other criminals without further loss of life . Aftermath . Nidaljo and his men celebrated briefly before the Knight was contacted by Carsen via Salarr ' s holoterminal . She had intercepted Salarr ' s holocall to Tarnis , and was astonished to learn that the doctor was a Sith . Carsen also had worse news — the Planet Prison that was in the lab was a fake , and Tarnis had stolen the real one . The Jedi ordered Carsen to trace the holocall , and the Knight and Teeseven returned to the Senate Building . Despite their victory , Nidaljo knew that his men could not hold the base successfully , and the unit retreated from the area . Behind the scenes . The raid on the Black Sun headquarters was created for " " , a released by BioWare on December 20 , 2011 . It appears in the Jedi Knight class story mission " Kidnapped ! , " in which the player ventures into Black Sun territory to rescue the kidnapped Doctor Tarnis . The quest features several points at which alignment choices can affect the outcome , but this article assumes that the Knight chooses the light side options as a light side character . The first turning point is when Nidaljo is about to give up hope , and the player can choose how to encourage him . For dark side points , the player can Force Persuade the Sergeant to help , or they can choose to insult the officer and leave without him for no alignment points and no aid in the battle with Salarr . The light side option is to inspire Nidaljo to help through words , which will also results in Nidaljo coming to aid the player against Salarr . If Nidaljo is present at the fight , the player can gain additional dark side points by ordering the CSF officers to attack Salarr without asking for his surrender .