Mission to Oba Diah (Clone Wars)

Prior to the Trade Federation's invasion of the planet Naboo, Jedi Master Sifo-Dyas, a member of the Jedi High Council, experienced visions foretelling an approaching war. These visions convinced him that the Jedi Order required an army. However, his fellow High Councillors deemed his views too extreme and removed him from the Council. Undeterred, Sifo-Dyas secretly journeyed to the distant world of Kamino, where the native species possessed expertise in cloning, and discussed the possibility of commissioning a clone army. However, the Sith learned of Sifo-Dyas's scheme through Dooku, a former Jedi and old friend of the Jedi Master who had secretly embraced the dark side of the Force, becoming the Sith Lord Darth Tyranus. The Sith decided to seize control of the project as part of their grand strategy to eliminate the Jedi.

Shortly after his visit to Kamino, Supreme Chancellor Finis Valorum tasked Sifo-Dyas with secretly negotiating with the Pyke Syndicate to prevent a criminal underworld war over the spice trade. Valorum dispatched his aide, Silman, to accompany the Jedi Master to the Pykes' stronghold on the planet Oba Diah. However, before negotiations could commence, the Jedi Council, unaware of Sifo-Dyas's mission to Oba Diah, ordered him to Felucia to resolve a tribal dispute. Intending to return, Sifo-Dyas and Silman departed Oba Diah in their T-6 shuttle. The Pykes, however, had been contacted by Tyranus, who offered them a substantial payment to destroy Sifo-Dyas's starship, an offer they accepted to gain an advantage over rival crime families. The [shuttle](/article/shuttle] crashed on Oba Diah's moon, resulting in Sifo-Dyas's death. Silman, however, survived. The Pykes handed over the Jedi's body to Tyranus but secretly imprisoned Silman in their dungeon as potential leverage, recognizing the danger of anyone who would pay to have a Jedi killed. Tyranus transported Sifo-Dyas's corpse to Felucia and fabricated a story that the tribes there had killed him, concealing the true circumstances of his death from the Jedi Order.

Tyranus, posing as Sifo-Dyas's representative to the Kaminoans, enlisted bounty hunter Jango Fett as the clone template and secretly engineered the clone troopers to kill the Jedi when commanded, misleading the Kaminoans into believing it was a contingency plan for rogue Jedi that the Order did not need to know about.

A decade following the Invasion of Naboo, which led to Sheev Palpatine's ascension to Supreme Chancellor, the Galactic Republic faced a severe political crisis as thousands of star systems seceded to form the Confederacy of Independent Systems, led by the former Jedi Master Count Dooku. Amidst this crisis, which the Jedi hoped to prevent from escalating into a full-scale war, Jedi Knight Obi-Wan Kenobi and his Padawan Anakin Skywalker were assigned to protect Senator Padmé Amidala, who was being targeted for assassination. After a failed assassination attempt by the bounty hunter Zam Wesell, which resulted in her death by a toxic dart, Kenobi followed a trail of clues that led him to Kamino, a planet mysteriously erased from the Jedi Archives. There, Kenobi discovered the clone army. The Clone Wars officially commenced shortly afterward at the First Battle of Geonosis, with Chancellor Palpatine authorizing the use of the clones as the Grand Army of the Republic. Unbeknownst to the Jedi, Palpatine was secretly Darth Sidious, the Dark Lord of the Sith and Dooku's Sith Master, and the two Sith Lords were manipulating both sides of the war to destroy the Jedi and transform the Republic into an Empire.

Several years into the conflict, the wreckage of Jedi T-6 shuttle 775519, which had remained on Oba Diah's moon since its crash, began emitting a distress signal that was intercepted by the Republic. Jedi General Plo Koon and the 104th Battalion were dispatched to investigate. Upon locating the wreckage, Plo discovered Sifo-Dyas's lightsaber at the scene, prompting him to order the transport of all materials to Coruscant. Kenobi and Skywalker, by then a Jedi Master and Knight, respectively, were sent to Felucia to question the tribal leaders. However, Kenobi struggled to understand their archaic dialect and eventually learned that another Jedi had accompanied Sifo-Dyas, and his body had been cremated after his death. Discovering that Sifo-Dyas's file had been sealed by the office of the Chancellor, Jedi Grand Master Yoda inquired with Palpatine, who feigned ignorance and suggested that the file must have been sealed by Valorum's orders. Speaking with Valorum, Yoda learned of Sifo-Dyas's secret mission to Oba Diah and that he had only been accompanied by the aide Silman. Seeking more answers, Kenobi and Skywalker were sent to Oba Diah to question the Pyke Syndicate in hopes of uncovering the truth about Sifo-Dyas's fate.

Sidious, angered that Dooku had left loose ends for the Jedi to investigate, contacted his apprentice on Serenno and ordered him to resolve the matter, reinforcing his orders with a Force choke over the holographic transmission to emphasize his displeasure.

Upon arriving on Oba Diah in an Eta-class shuttle, Kenobi and Skywalker were greeted by Pyke guards who escorted them to meet with the Syndicate's leader, Minister Lom Pyke. The Jedi inquired about Sifo-Dyas and Silman's visit, but Lom denied any knowledge, only admitting that they had been there. However, Skywalker noticed that Lom was wearing a necklace identical to one worn by Silman in a file image, inscribed with Valorum's seal of office, and seized it using the Force. Confronted with this evidence, Lom admitted that Silman had been present. Leading the Jedi into the Pykes' dungeons, Lom recounted how the syndicate had been hired by Tyranus to kill Sifo-Dyas, a name Kenobi recognized from Fett's mention during their meeting on Kamino. Lom revealed that Silman was still alive and led Kenobi and Skywalker to the cell where he had been held for years, hoping that his cooperation would make the Jedi forget about the Pykes' involvement in Sifo-Dyas's death.

Kenobi and Skywalker entered Silman's cell to question the former Chancellor's aide. However, Silman had become mentally unstable during his imprisonment, conversing with the vermin in his cell as if they were people and believing his cell was his home. He was initially fearful of his visitors but eventually asked them for food. After Skywalker gave him a ration bar, Silman used it to feed the vermin. Kenobi and Skywalker attempted to extract any details about Sifo-Dyas's death and the reasons behind it from the ill man. Eventually, Silman managed to recount that Sifo-Dyas had been murdered because someone wanted to "be" the late Jedi Master. During the questioning, Dooku arrived on Oba Diah in his Punworcca 116-class interstellar sloop. Two guards met him, asserting that Tyranus had no further business with the Pykes, but he used the Force to throw them to their deaths off the landing platform before proceeding inside. Dooku arrived at Silman's cell just as Kenobi was trying to discover who wanted to impersonate Sifo-Dyas and promptly used the Force to choke the aide to death. However, the murder and Dooku's presence revealed the answer the Jedi sought. Skywalker commented that the Count had come to do his own "dirty work" for once.

Kenobi and Skywalker engaged Dooku in a lightsaber duel, which led them from the Pyke Palace detention level to an exposed area on the side of the building. While the trio fought, Minister Lom arrived with a group of guards. Upon seeing Dooku, Lom addressed him as Tyranus — the only name he knew the Sith Lord by — when stating the Count had no further business with the Pyke Syndicate. Kenobi was shocked to learn that Dooku was the mysterious Tyranus. Dooku claimed that he had already told Kenobi everything he needed to know on Geonosis when the war began and should have convinced him to join him, before stating that Sifo-Dyas had known the future, which was why he helped him. Kenobi dismissed this as a lie and shouted to Lom that if he was going to help, he had best do it now. Lom ordered his men to kill Tyranus, and Kenobi and Skywalker attempted to Force push Dooku towards the Pyke guards. However, Dooku jumped out of the way, causing the Pykes to be knocked over instead, before running Lom through with his lightsaber. Dooku was forced to defend himself from Pyke reinforcements before Kenobi and Skywalker engaged him again. Eventually, Dooku gained the upper hand and covertly summoned his ship. Dooku then dropped off the platform to land on an ascending Coruscant Freighter. Kenobi used the Force to throw Skywalker after the escaping Dooku, and the two dueled atop the starship. However, Dooku's own ship arrived, and the Sith Lord damaged the freighter's engine before leaping to his own ship. Dooku mockingly saluted the Jedi before escaping. Skywalker was left dangling by one hand from the damaged freighter, frustrated and defeated.

The Jedi Council learned that the Sith had been involved in the clone army's creation and questioned the reasons behind it. With Master Yoda vouching for the clones' loyalty and valiant service, the Council decided to keep the revelation secret from the Chancellor and the Galactic Senate, fearing that the news would erode public confidence in the war effort. Skywalker was unhappy with the decision but reluctantly agreed. The Jedi never connected the Sith's involvement in the clones' creation with the biological inhibitor chips implanted in the clones, which were supposedly there to keep them mentally stable and curb their aggression. The chips were discovered after the clone trooper Tup's chip malfunctioned during the Battle of Ringo Vinda, causing him to kill Jedi General Tiplar. The incident prompted ARC trooper Fives to investigate and uncover the chips, but he was discredited and killed thanks to Palpatine's machinations, preventing him from proving the danger of the chips to the Jedi. The official explanation was that both clones' chips had malfunctioned due to a rare Ringo Vindan parasite.

After the revelations from Oba Diah, Yoda embarked on a vision quest to discern the future after encountering the Force spirit of Jedi Master Qui-Gon Jinn. Yoda saw visions of the still-mysterious Sidious and the downfall of the Jedi Order, leading him to believe that the Jedi would lose the war, though he did not know how. However, he believed that the light side of the Force would ultimately prevail.

At the end of the Clone Wars, Palpatine, having eliminated Dooku as he no longer needed him, executed his plot by ordering the clones to carry out Order 66, which resulted in the deaths of most of the Jedi, plunging the galaxy into a period known as the dark times. Yoda and Kenobi survived the initial wave of the Great Jedi Purge, but Skywalker succumbed to the dark side due to Palpatine's manipulations, becoming the Sith Lord Darth Vader. After confronting Vader and Palpatine, Kenobi and Yoda went into hiding, ensuring that the newborn Skywalker twins were also hidden. Yoda informed Kenobi that the Force spirit of Jinn would communicate with him so that he too could learn to preserve his spirit after death.

Intelligence reports were compiled detailing the mission and Dooku's murders of Silman and Lom. These reports were later collected by the New Republic, and the mission was mentioned in "Index of Organizations," a survival compendium distributed by Carson Teva during the New Republic Era.

The mission to Oba Diah was first depicted in "The Lost One," an episode from season 6 of Star Wars: The Clone Wars.